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b98b3257d05b3cfb1cd6cc19eae2c6b9 | is earth an inertial frame of reference? if not why? | askiitians.com | 2021.25 | [
{
"text": "earth is non inertial frame. it has acceleration.hence it is accelerated with’g’.so, it is non inertial frame. but the value is very less in comparision ang hence can be neglected. so, we can assume it as inertial frame.and can apply laws of motion.",
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"text": "@ rajesh a non inertial frame is that which is on rest or is moving with constant velocity and no acceleration . though earth has an acceleration , but that acceleration is very very less and is almost negligible . so, earth is considered as an inertial frame of reference . but its by convention only .. hope it clears your doubt ..",
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b456e5007472e0d0625fba8a646172f5 | a dsp system is preceded by sample and hold with an aperture time of 10ns and acquisition time of 1 micro second followed by an 8-bit bit adc. determine the max: adc conversion time to support time support a sampling frequency of 100khz. | askiitians.com | 2021.25 | [
{
"text": "dear anum digital signal processing (dsp) is not in the syllabus of jee. all the best. akash goyal askiitiansexpert-iitd please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. now you score 5+15 points by uploading your pic and downloading the askiitians toolbar respectively : click here to download the toolbar..",
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{
"text": "same problem",
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eda03a6e269d895f8956e20dea9d2605 | the circle passing through (1, -2) and touching the axis of x at (3, 0) also passes through the point (1) (2, -5) (2) (5, -2) (3) ( -2, 5) (4) ( -5, 2) | askiitians.com | 2021.21 | [
{
"text": "hello student, please find the answer to your question below let the equation of circle is (x-h) 2 +(y-k) 2 =r 2 .........(1) when circle touches x axis then r=k substituting (1,-2) in eqn(1) and r=k we get h=3,k=-2 and r=2 (x-3) 2 +(y+2) 2 =4 from the options (5,-2) passes through the above circle",
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"text": "dear student, please find below the solution to your problem. let the equation of circle is (x-h)^2 + (y-k)^2 = r^2.........(1) when circle touches x axis then r=k substituting (1,-2) in eqn(1) and r=k we get h=3,k=-2 and r=2 (x-3)2+(y+2)2=4 from the options (5,-2) passes through the above circle thanks and regards",
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8ff376a360a206b8d9d3ab6080e875ed | sin3θ = cos2θ find the most general values of θ satisfying the equatios? sinax + cosbx = 0 solve ? | askiitians.com | 2021.39 | [
{
"text": "dear mayank, sin (3x) = sin(2x + x) = sin(2x)cos(x) + cos(2x)sin(x) = 2sin(x)cos(x)cos(x) + (1 - 2sin² (x) ) sin(x) = 2sin(x)cos² (x) + sin(x) - 2sin³ (x) = 2sin(x) ( 1 -sin² (x) ) + sin(x) - 2sin³ (x) = 2sin(x) -2sin³ (x) + sin(x) - 2sin³ (x) = -4sin³ (x) + 3sin(x) = 3sin(x) - 4sin³ (x) cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. http://www.askiitians.com/packages/packages.aspx so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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0768693443fc261d8c11ec4e5a654a17 | what is a biodegradable polymer? give an example of a biodegradable aliphatic polyester. | askiitians.com | 2021.21 | [
{
"text": "hello student biodegradable polymersare a specific type of polymer which can be broken down by microorganism after its intended purpose to result in natural byproducts such as gases (co2, n2), examplesofbiodegradable polymers, phb, plc, pga, phbv and pla",
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5e8bc898fbd5d9de106182bca7f69ef8 | fleming’s right hand rule elaborate | askiitians.com | 2021.39 | [
{
"text": "this rule can be understood using our right hand as if the forefinger, the middle finger and the thumb of the right hand are held in the three mutually perpendicular directions. if the forefinger points along the direction of the magnetic field and the thumb is along the direction of motion of the conductor, then the middle finger points in the direction of the induced current. thill will then be be used ot calculate out the direction of the induced current",
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"text": "fleming's right-hand rule (for generators) shows the direction of induced current when a conductor moves in a magnetic field. the right hand is held with the thumb,first finger & second finger mutually perpendicular to each other (at right angles). the thu m b is pointed in the direction of m otion of the conductor. the f irst finger is pointed in the direction of the magnetic f ield. (north to south) then the se c ond finger represents the direction of the induced or generated c urrent (the direction of the induced current will be the direction of conventional current; from positive to negative).",
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"text": "fleming's right - hand rule thumb denotes the motion point finger denotes the field middle finger denotes the current",
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b8b9ac59a1127baee98beb34a3978fb0 | what is isomerism? and explain briefly about it?what are the types of isomerism? | askiitians.com | 2021.21 | [
{
"text": "isomerism is the phenomenon whereby certain compounds with same molecular formula, exist in different forms owing to their different organisations of atoms.the concept of isomerism illustrates the fundamental importance of molecular structure and shape in organic chemistry.they are two main forms of isomerism they are 1.structural isomerism(constitutional isomerism), 2.stereoisomerism(spatial isomerism)",
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"text": "having same molecular formula but different structure and properties is called as isomerism.and they they are of 2 types.1.structural isomerism,2.stereo isomerism.",
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"text": "hello, compounds containg with the same molecular formula, exist in different forms owing to their different organisations of atoms. this concept is called isomerism.",
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bc78544ae3e7479fa5f08b6cbb04c1ce | |-(x/∏)| = -1-|x/∏|, x ≠ n ∏ , n ε i true/false?? plzz explain for ur answer | askiitians.com | 2021.21 | [
{
"text": "dear student please write the question in a standard form or attach an image of the question regards",
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47fd40f424bd9758320e2b62c8431a1c | if two bulbs one of 60 watt and another of 100 watt are connected in series which will glow more and which has more resistance | askiitians.com | 2021.31 | [
{
"text": "as bulbs r connected in series p=i 2 r the bulb with more power will have more resistance (in series i is const. so pis prop to r) the bulb with low resistance will glow more",
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"text": "for calculating resistance, consider the bulbs individually and use p=v 2 /r here v will be constant for both. r 1 > r 2 then when they are connected in series use p=i 2 r since they are connected in series current will be same. and r 1 > r 2 so p 1 > p 2",
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144a93e8bef5ae4427c902827a3c86db | i have got !!() rank in uptu 2010...which colleges can i get.?? also plz tell me about the branches i may get...... | askiitians.com | 2021.21 | [
{
"text": "please post the correct question. best of luck!!!",
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a18b9bce502efe32cfe3baf055783190 | question 8:explain, with examples, why we find animals of certain kind living in particular climatic conditions. | askiitians.com | 2021.31 | [
{
"text": "answer: certain kind of animals can be found in particular climatic conditions as they can adapt well to those conditions. for example, a polar bear is adapted for polar regions. it has a thick skin and a layer of fat to keep it warm in cold conditions. however, with these adaptations, it will not be possible for it to survive in tropical region where it is hot. similarly, a monkey is adapted to live in the forests with features such as long and sturdy tail, loud voice, etc. these features are of no importance in polar regions where vegetation is very less. therefore, certain types of animals live only in certain climatic conditions.",
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999c3d38547e3bf692ec2183b16d326c | how can i perform my best in aiims and neet ,i am little stressed about my ent exam | askiitians.com | 2021.31 | [
{
"text": "hi dear first of all do not worry. if you really want to crack these exams, you have to build trust on you and your hardwork. watch those notebooks and books from you have practiced. you will get to analyse that how hardly you have been working from past 2 years also still you have much time for the exam. work on your weak areas and try last year papers surely. i personally advice you to join a good test series so that you can suceed. keep confidence and take care of your health as well. you will surely be suceed. if needed go for a crash course. if you have some doubt please let us know regards,sahil",
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"text": "dear heena just keep these following point in mind 1- frst of all stress happens with everyone , so, donot worry about that . 2- trust on your preparation . 3- donot compare yourself with other student , and donot decrease the self confidence 4- in these remaining 41 days ( neet ) do 5-7 new chap[ters , and revise the rest . keep calm and reach exam center on time . all the best regards kindly approve",
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482f26a2c6f967ca5737f3c450ec9155 | the number of neutrons in an atom of 90th230 is | askiitians.com | 2021.39 | [
{
"text": "means mass number a= 230 and atomic number z= 90. we know that a=z+n so n= 140. thanks and regards apoorva arora iit roorkee askiitians faculty",
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584cad71adfea16b10e3c4c17051323e | i want to do a second attempt at iitjee. i appeared this year.i want to know if it is advisable to join cet and prepare for iitjee simaltaenously. | askiitians.com | 2021.25 | [
{
"text": "hi preparing for jee is nt an easy task . u really need to be hard working and committed towards ur goal to get thru the xam. as u are going fr the second attempt , u need to be clear in ur mind, that u really ant to clear jee. preparing fr jee, and continuing with ur other college studies could be a difficult task at times. there are people who just prpare fr jee and do not go thru. so, think upon it, that if u can really manage both simultneously, then only go fr that, else u;ll end up messing both.",
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c62572f918493b4fe0964d8dd98d752c | which one of the following component can function as c arrier in active transport ferredoxin and cytochrome cytochrome and lecithin lecithin plastoquinone | askiitians.com | 2021.21 | [
{
"text": "hello student correct answer is 3. lecithin lecithin is a complex protein which binds up anions and cations on its surfaces, thus it plays a role of carrier in active ion absorption.",
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b9ec1b9b85def768984096ea9d9dfe20 | the figure shows a smooth circular path of radius r in the vertical plane which subtends an angle ( ) at o. a block of mass 'm' is tacken from position a to b under the action of a constant horiontal force f. (a) find the work done by this force. (b) in part (a) if the block is being pulled by a force f which is always tangential to the surface, find the work done by the force between a and b. | askiitians.com | 2021.31 | [
{
"text": "(a) work done =force*displacement. w =f*r(displacement=r) (b) direction of the force is continually changes so,force f is variable w=f.ds (ds=2*180*r*1/4) w=f*2*180*r*1/4 =180*fr*1/2",
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8043c82223c6086c8f58d61e00910ca4 | integrate cos power five x into cosec square x into dx | askiitians.com | 2021.43 | [
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"text": "i dont know how to send the answer here.. so take my whatsapp number and text me there ill send u the solution.. 8588950050",
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c0185062e6925307af0d67297f373993 | sir
i am getting 216 in jee mains. my 12th marks of andhra pradesh board are 464 out of 530. i belong to obc ncl. please inform my air and catagory rank. | askiitians.com | 2021.39 | [
{
"text": "you can predict your rank in jee mains with the help of the following provided links. compare your rank with previous year cut-off of various institutes. this will give you an idea of the various branches in different institutes open for you. 1.http://blog.askiitians.com/calculation-percentile-normalization-marks-composite-score/ 2.http://www.askiitians.com/iit-jee/main/rank-predictor.html thanks and regards apoorva arora iit roorkee askiitians faculty",
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fe58bf790b08f10624a98324f37f82ec | current 10 ampere is flowing through infinitely long tube of radius r metre then find magnetic induction at r/2 meterfrom the axis point inside the tube | askiitians.com | 2021.39 | [
{
"text": "zero",
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9e6620fadd2276140c41d34ec5c738c3 | 10. what are the functions of areolar tissue? | askiitians.com | 2021.43 | [
{
"text": "functions of areolar tissue : (1) it helps in supporting internal organs. (2) it helps in repairing the tissues of the skin and muscles.",
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91d4a23740394b3612927d1dd68d071e | sir, how is to be my last time prepration i am solving iit's past years question is it fruitful for me | askiitians.com | 2021.25 | [
{
"text": "dear saket the complexity of the iit-jee arises from the fact that the questions are always unique in their context, and solving them often requires a combination of concepts from across different chapters. first of all u be clear in ur conceptual understanding and then concentrate on solving various questions from different study materials. dont loose ur confidence. work hard and utilize the time available effectively. also utilize the faculties of the coaching centres to know about the techniques of solving the problems and also the what kind of study materials can give the problems which are more related to the jee exams i think you have completed your syllabus. so from now you should give more stress to those topics in which you feel difficulty. or in which you are not much confident.and at the same time you should keep revising other topic also.try to solve new question . and time to time solve sample papers . solving model papers is very important and fruitful in jee prepration,it will increase ur confidence,by this u will learn how to use ur 3 hours in attempting the different portion of question papers, and do not waste your time in solving question that are very difficult .many peaople frame such a question which are not a part of syllabus.and it is just a wastage of time. just stay calm and focus on understanding rather than mugging. be regular in class and stay with concepts please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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b73b1323f5ae47895124a9a70fd6ec75 | nuclear force is always attractive, but in wider range it is repulsive! why? | askiitians.com | 2021.21 | [
{
"text": "hi the nuclear force is only felt among hadrons, (which is a particle made of quarks held together by the strong force (similarly to how atoms and molecules are held together by the electromagnetic force). at much smaller separations between nucleons the force is very powerfully repulsive, which keeps the nucleons at a certain average separation. beyond about 1.7 femtometer (fm) separation, the force drops to negligibly small values. at short distances, the nuclear force is stronger than the coulomb force; it can overcome the coulomb repulsion of protons inside the nucleus. however, the coulomb force between protons has a much larger range and becomes the only significant force between protons when their separation exceeds about 2.5 fm. the nuclear force is nearly independent of whether the nucleons are neutrons or protons. this property is called charge independence . it depends on whether the spins of the nucleons are parallel or antiparallel, and has a noncentral or tensor component. this part of the force does not conserve orbital angular momentum, which is a constant of motion under central forces. thanks anurag kishore",
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7b3338c71c44f0915cbf1371b9b0158d | hybridization of nitrogen 1 and 2 in the following compound is. please explain. | askiitians.com | 2021.31 | [
{
"text": "both the nitrogen are sp2 hybridized. the lone pairs of nitrogen 1 take part in resonance while in 2 the nitrogen has multiple bonds already so the lone pairs won't take part in resonance.",
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d43dacf7f91b6b729edfac38702ab0a0 | . what will be the unit digit of the squares of the following numbers? vi. 26387 vii. 52698 viii. 99880 ix. 12796 x. 55555 gyklutld7tdltld | askiitians.com | 2021.25 | [
{
"text": "dear student the unit digit of square of a number having 'a' at its unit place ends with a×a. vi.the unit digit of the square of a number having digit 7 as unit’s place is9.∴ unit digit of the square of number 26387 is equal to 9. vii.the unit digit of the square of a number having digit 8 as unit’s place is4.∴ unit digit of the square of number 52698 is equal to 4. viii.the unit digit of the square of a number having digit 0 as unit’s place is01.∴ unit digit of the square of number 99880 is equal to 0. ix. the unit digit of the square of a number having digit6 as unit’s place is6.∴ unit digit of the square of number 12796 is equal to 6. x.the unit digit of the square of a number having digit 5 as unit’s place is5.∴ unit digit of the square of number 55555 is equal to 5 thanks",
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660380049b3c3bade2a2d7d82833a8f7 | whatis oil drop experiment? what is its use?who proposed that? | askiitians.com | 2021.21 | [
{
"text": "the oil drop experiment was an experiment performed by robert a. millikan and harvey fletcher in 1909 to measure the elementary electric charge (the charge of the electron). the experiment entailed observing tiny charged droplets of oil between two horizontal metal electrodes.",
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"text": "initially the oil drops are allowed to fall between the plates with the electric field turned off. they very quickly reach a terminal velocity because of friction with the air in the chamber. the field is then turned on and, if it is large enough, some of the drops (the charged ones) will start to rise. (this is because the upwards electric force f e is greater for them than the downwards gravitational force f g , in the same way bits of paper can be picked by a charged rubber rod). a likely looking drop is selected and kept in the middle of the field of view by alternately switching off the voltage until all the other drops have fallen. the experiment is then continued with this one drop. the drop is allowed to fall and its terminal velocity v 1 in the absence of an electric field is calculated. the drag force acting on the drop can then be worked out using stokes' law : where v 1 is the terminal velocity (i.e. velocity in the absence of an electric field) of the falling drop, η is the viscosity of the air, and r is the radius of the drop. the weight w is the volume d multiplied by the density ρ and the acceleration due to gravity g. however, what is needed is the apparent weight. the apparent weight in air is the true weight minus the upthrust (which equals the weight of air displaced by the oil drop). for a perfectly spherical droplet the apparent weight can be written as: at terminal velocity the oil drop is not accelerating . therefore the total force acting on it must be zero and the two forces f and w must cancel one another out (that is, f = w). this implies once r is calculated, w can easily be worked out. now the field is turned back on, and the electric force on the drop is where q is the charge on the oil drop and e is the electric field between the plates. for parallel plates where v is the potential difference and d is the distance between the plates. one conceivable way to work out q would be to adjust v until the oil drop remained steady. then we could equate f e with w. also, determining f e proves difficult because the mass of the oil drop is difficult to determine without reverting to the use of stokes' law. a more practical approach is to turn v up slightly so that the oil drop rises with a new terminal velocity v 2 . then .",
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eed5a00a791300b0940409afb4ae9edf | y=sinx+cos2xaskiitians.com0home » forum » trigonometry » cos 2 76deg + cos 2 14deg...abhinav acharyacos276deg + cos214deg -cos76deg.cos16deg.=2 years agoanswer this questionanswers : (1)rinkoo guptaaskiitians faculty80 pointscos276+cos214-cos76cos16(1+cos152)/2+(1+cos28)/2-cos76cos16=1+1/2[cos(180-28)+cos28]-cos76cos16=1+1/2[-cos28+cos28]-cos76cos16=1-cos76cos16=1-1/2[2cos76cos16]=1-1/2[cos92+cos60]=1-1/2[cos(90+20+1/2]=1-1/2[-sin2+1/2]=1-1/4+1/2 sin2=3/4+(1/2) sin2thanks & regardsrinkoo guptaaskiitians faculty2 years agopost your answerenter your answer here... answerother related questions on trigonometryrelated questiona+b+c=180 prove that sin2 a-sin2 b-sin2 c=-2cosasinbsinc thanx=(sin y-cos y)/(siny +cosy ) then siny+ cosy,................ please give me a step wise solution of question with each & every reason from 2nd eq in question...-> ax sinß / cos²ß = by cosß / sin²ß…-> tan³ß = by / ax-> tanß = (by/ax)⅓...from tanß you can take out sinß and cos ß which are respectively:::: sinß = (by)⅓ /... faiz 2 months ago correction for the last step::-> [ (by)⅔ + (ax)⅔ ] ^3/2( instead of 2/3 wrongly printed ) = a² - b²....-> (by)⅔ + (ax)⅔ = ( a² - b ) ^ 2/3......hence proved...sorry the powers were wrongly... faiz 2 months agoshow that 2 sinx+ 2 cosx >2 1 -1/square root 2 2)if tana and tan b are theroots of equation x 2 +px+qthen1) sin (a+b)=-p 2)tan(a+b)=p/q-1 3)cos a+b)1-q u must know the range of sinx and cosx. similarly sinx lessthan equal to 2 and greater than equal to ½.................(1) 1/2 > = 2^cosx > = 2.............(2) remember cosx is decreasing... vikas tu 5 months agoif a+b=pi/2, where a,b>0, then the maimum value of sina + sinb is equal to hy darshini a+b=pi/2... therefore a=pi/2 - b.. we have to max value of sina+sinb.. putting tha above value it comes sina+cosb whose maximum value is 1/root 2.. hope u like it.. suraj singh 3 days agoview all questions »complete jee main/advanced course and test seriesoffered price: r 15,000view detailsget extra r 3,000 offuse code: mob20ask expertshave any question? ask expertstrigonometryattached image :- img-20170113-wa... attach image | askiitians.com | 2021.21 | [
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"text": "sorry the doubt is unclear and we cannot understand it so please post it again thanks hope to hear from your side again",
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b4e66c20e1815e96ae89ab42f51f74d6 | sir, how much should i score jee main to enter into nit surathkal in civil engineering branch? | askiitians.com | 2021.43 | [
{
"text": "you should score 200+ in jee mains to get nit surathkal civil engineering branch. thanks and regards saurabh singh askiitians faculty b.tech. iit kanpur",
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"text": "200+ in mains and 90+ in boards\nmeenakshi\nnit trichy",
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4bd6fe338abb6e1d5e0729bc4d73c8b8 | find area of region bounded by the curve y=[sinx+cosx] between x=0 to x=2p. | askiitians.com | 2021.31 | [
{
"text": "dear aniket y =[sinx + cosx] =[v2sin(x+p/4)] expand the function y = 1 for 0 = x = p/2 = 0 for p/2 < x = 3p/4 = -1 for 3p/4 < x = p = -2 for p < x < 3p/2 = -1 for 3p/2 = x < 7p/4 = 0 for 7p/4 = x < 2p now breack the integrtion as above limit and find intigral please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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2b912eacda1bf4622d48343cbc5e80f7 | exact meaning of dipole movement? please give answer in physical terms not mathematical terms i'll surely approve all correct answers. | askiitians.com | 2021.25 | [
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"text": "what is polar and nonpolar",
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1d853270f382bf6ead181583b5253463 | please arrange iit k mathematics and computing , iitk chemical and iit guwahati electronics and electrical on basis of job opportunities after btech. | askiitians.com | 2021.43 | [
{
"text": "you can choose any of iit k, maths and computing or iit g electrical and electronics...after this you may opt iit k chemical",
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a94be47ebbed57e49098eb54cc85f957 | how many common chords can a circle parabola have? | askiitians.com | 2021.25 | [
{
"text": "dear shubham there can be maximum of 4 points of intersection so max no.of chords will be 6 please feel free to post as many doubts on our discussion forum as you can.we will get you the answer and detailed solution very quickly. all the best. regards, askiitians experts prudhvi teja now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian",
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"text": "this is because there is a maximum four points of intersection between a parabola and circle. you can show this algebraically:say the parabola`s equation is x2=4ay and the circle`s equation is x2+y2+2fx+2gy+h=0 then by substituting y=x2/4ay into the circle`s equation, we get:x4/16a2+x2+2fx+2gy+h=0 which is a degree 4 polynomial hence has at max 4 distinct real roots hence 4 different points of intersection (since the parabola equation is many to one).with 4 points of intersection you can then form a common chord by choosing any two of the four points by using permutation and joining them; hence you can have at max 4c2=6 common chords.",
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78a0486a82da40b4997547429ca47310 | the differences in the characters or traits among the individuals of a species are called as a variations b speciation c both a and b d none of the above | askiitians.com | 2021.31 | [
{
"text": "variation is any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). speciation is the evolutionary formation of new biological species, usually by the division of a single species into two or more genetically distinct ones. the formation of new biological species by the development or branching of one species into two or more genetically distinct ones.",
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"text": "variation is any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation). speciation is the evolutionary formation of new biological species, usually by the division of a single species into two or more genetically distinct ones. the formation of new biological species by the development or branching of one species into two or more genetically distinct ones.bv",
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8838e8fa9f0d1310425929522c1d505e | if the vectors −3i + 4 j + λk and μ i + 8 j + 6k are collinear vectors then find λand μ. | askiitians.com | 2021.39 | [
{
"text": "let a = −3 i + 4 j + λk , b = μ i + 8 j + 6k from hyp. a, b are collinear then a = tb ⇒ −3i + 4 j + λk = t(μ i + 8 j + 6k) −3i + 4 j + λk = μt i + 8t j + 6tk comparing i, j, k coefficients on both sides 3 3 μt = −3 ⇒ μ = − = − = −6 ⇒ μ = −6 t 1/ 2 4 1 8t − 4 ⇒ t = ⇒ t = 8 2 1 6t = λ ⇒ λ = 6 ⋅ ⇒ λ = 3",
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dcdf0c0dab9d20ee6325a9e1e48ac24c | integrate (sqrt((1-sqrt (x))/(1+sqrt (x))))*dx/x please solve with steps | askiitians.com | 2021.25 | [
{
"text": "dear varun put x = cos^2 2 theta and then it will be very easy to solve hope it helps regards arun (askiitians forum expert)",
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326f248fb4f5db784f59737eb55d0342 | can you please tell me the derivation of rms value of current. | askiitians.com | 2021.25 | [
{
"text": "an alternating current is given by i = i 0 sin(wt+phie) the instantaneous current i could be positive or negative at a guiven instant but quantity i 2 always remains positive and hence its average is also positive. the average of i 2 over a time period is i 2 (bar) = integration from 0 to t of (i 2 dt) / integration from 0 to tof (dt) on putting value of i = i 0 sin(wt+phie) = 1/t[ integration from 0 to t of i 0 2 sin 2 (wt+phie)]dt = i 0 2 /2t integration from 0 to t of [ {1-cos2(wt+phie)}]dt = i 0 2 /2t[t - sin2(wt+phie)/ 2w] from o to t = i 0 2 /2t [t - sin(4pie+2phie) - sin 2pie/ 2w] = i 0 2 / 2 this is know as the mean square current .the square root mean square current or rms.current.thus i rms = square root (i 2 bar) = i 0 / squareroot(2) thanks & regards, nirmal singh, askiitians faculty.",
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908434ca3dd8edd0c7cef70244434648 | please explain how detergents clean dirty clothes? | askiitians.com | 2021.31 | [
{
"text": "how do detergents clean dirty clothes consider a wire frame (see the adjacent figure) equipped with a sliding wire ab. it is dipped in a soapy water. a film of liquid is formed on it. a force f has to be applied to hold the wire in place. since the soap film has two surfaces attached to the wire, the total length of the film in contact with the wire is 2l. t (surface tension) = . f/2l surface tension of a liquid is measured by the normal force acting per unit length. on either side of an imaginary line drawn on the free surface of a liquid, the direction of this force is perpendicular to the line and tangential to the free surface of liquid. t = f/l .",
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68ab6c8a18adf500f3cf49425b35d90d | which coaching institute provides the best test series for iitjee | askiitians.com | 2021.25 | [
{
"text": "hi fiitjee and brilliant tutorials best series are good. they are conducted on an all india basis and large no. of students appear for that , so , the competition level is high and thus one can analyse oneself as per their peformances. they give the percentile, the all india rank and the regional rank too. they also have quite similar patterns as jee. although if u are interested in online test series then we have something to offer: dear student, askiitians provides live online iit-jee preparation askiitians has laid a platform for the students whose mind is juggling with so many doubts. let our experts (iitians) help you and suggest you. now you can get all your questions / problems answered for free – just logon to http://www.askiitians.com/forums/ , post your question and get the answer in a few hours from our experts. live online tutoring askiitians provides live online tutoring for iit-jee. all you need is a computer system and a broadband connection to attend our live online classes. we run complete 1 year and 2 year live online batches to take care of your complete iit-jee preparation. if you are not comfortable with full time classes then you can go for small packages of small amount and book your session as per your comfortableness. http://www.askiitians.com/iit-jee-maths.aspx we provide free 'a question a day' where you can login to your askiitians account everyday and tryout aqad by this you can easily compare yourself with other thousands of students. at the end of every month we will give you your rank amongst askiitians community (it's 5000 plus right now and growing very fast) and projected iit-jee and aieee rank along with complete analysis of your preparation for the grueling exams. http://www.askiitians.com/a-question-a-day.aspx . we are going to launch one of its kind 'test series' from 10 th july. herein you can login to your askiitians.com account and take free online tests. when you submit your tests we give you your projected iit jee rank, percentile amongst askiitians registered students, your performance in each section, areas where you need to work and more interesting analysis to compare where you stand in your preparation. we are providing you free study material for iit-jee preparation. you can go for this very easily and access as per your requirement . http://www.askiitians.com/iit-study-material/ . an iitian is always there for you! thanks",
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25298077357c30f67dbef134111a000a | show that the expression (ax-b)*(cx-d)/(bx-a)*(dx-c) can have all the values for real x if (a*a)-(b*b) and (c*c)-(d*d) have the same sign. | askiitians.com | 2021.21 | [
{
"text": "hello student, please find the answer to your question below given(ax-b)*(cx-d)/(bx-a)*(dx-c) =(acx 2 -(ad+bc)x+bd)/bdx 2 -(bc+ad)x+ac =x 2 -((d/c)+(b/a))x+(bd/ac)/x 2 -((c/d)+(a/b))x+(ac/bd) so by finding the discriminant of the equation from the above we can observe that the expression (ax-b)*(cx-d)/(bx-a)*(dx-c) can have all the values for real x if (a*a)-(b*b) and (c*c)-(d*d) have the same sign.",
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c68848c23e2f298dc27d6edc8f56d183 | discuss the differentiability of f(x) =|x^3| at x=0. | askiitians.com | 2021.39 | [
{
"text": "yes. the easiest way to show this to consider the functions y = x^3 and y =(-x)^3 being the right and left sides of the graph. the derivative of y = x^3 is 3x^2, and its value at x = 0 is 0. the derivative of (-x)^3 is -3x^2, and its value at x = 0 is also 0. hence the derivative is the same when approached from the left or the right.",
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95c3c246be085240557503583977e655 | sir, i might get manufacturing processes and automation in nsit , indutrial and production in dce and mechanical engineering in nit kurukshetra ...plz arrange the following in correct preference order..also state your reason.. | askiitians.com | 2021.43 | [
{
"text": "mech>production>manu approve..............",
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"text": "dear aman, mech at nit k is the best option available to you. best of luck plz approve the answer...!!!! cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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{
"text": "dear aman parwaize, mechanical at nit kuruksheytra is a good option!!!!!! good luck!!!!!!!! plz. approve my answer by clicking 'yes' given below!!!!!! plz. plz. plz.!!!!!! don't forget!!!!!!!",
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f1f9016099164e9e745277c1d3eb7b94 | hi, i have got 1000 sc category rank in jee advanced. from the past years admission data, i guess i will get : textile in iit delhi, metallurgy in iit roorkee, mechanical in iit patna may you please suggest me as to what will be a better option? in case i am missing any of the branches i could get...kindly help thank you | askiitians.com | 2021.31 | [
{
"text": "hi, textile in delhi and meta in roorkee are equally good. its just that you have a better non tech scope in delhi as compared to roorkee. but if you are interested in any of the branches than you must go for it. ….….….…....….….…....….….…....….….…....….….…....….….…....….….…....….….…....….….…...",
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e7d3b3376116c468b097d26ea2d3619e | sur ca u provide me a study plan to cope up in aipmt | askiitians.com | 2021.39 | [
{
"text": "in aipmt, nothing is of more important than ncert, definitely only ncert is not sufficient so you must purchase a reference and stick only to one and not more than that else it creates a lots n lots of confusion. so, ncert main book along with one reference (any one that you find easy to read and understand) start studying the chapters in book according to the weightage in aipmt. there are chapters which i suggest as “do or die”, some are “should do” while remaining i classify as “do only if you have ample time” (but that doesn’t mean you can leave them, its just that they are less important as compared with others). do or diecan include monera, cell structure, photosynthesis, plant nutrition, genetics, plant morphology, plant kingdom etc. should doinclude animal nutrition, animal reproduction & development, animal respiration, animal tissues, ecology, biotechnology etc. do only if you have ample timeinclude biodiversity, animal kingdom from porifera to echinoderms, anatomy of flowering plants, growth repair and regeneration, origin of life, microbes etc. however, there have been more questions from the human physiology, plant physiology, cell biology, ecology, biomolecules, biotechnology as per the questions asked in past years exams. after completing any topic, the objective questions should be solved and one must go through the questions asked in previous year aipmt exam from the same topic as it will give insight about the depth of the topic to be covered. apart from that solve as many questions as possible after completing a chapter as this will provide you with vast exposure of questions. if you think you have not read the content in the book, you can make a note diary in which you can mention that question in form of a note, so that at the end you just need to go through your diary and not the questions of the book again. animalia and plantae topic needs to be prepared more carefully as otherwise it can be too exhaustive and time consuming as given in many books. the main emphasis must be on the characters of phylum in non-chordates and up to class level in chordates. all examples given in the ncert along with the common name (wherever given) should also be learnt. use bright markers and symbols to point out important notes, this helps during revision. students are known to retain knowledge gained better when they can associate an image or demonstration referring to it.",
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147a0d8487b4742ad134a20830908fb8 | can i get a suggestion of what to read in biology except medical after class 12 | askiitians.com | 2021.25 | [
{
"text": "hey dear in this answer, i will not mention a number of courses. but i will elaborate about a single course that you can pursue after class 12th medical and that is b.v.s.c and a.h.. it stands for bachelor of vetenairy sciences and animal husbandary. the course does not have a high fees structure and placements and salary packages are also high.. moreover you will get a chance to serve animals and humanity. it is one of the best alternate to mbbs",
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fee0dc3f66e1ed5e3146c67eb02ad127 | n mole each of h2o, o2 and h2 are mixed at a suitable high temperature to attain the equilibrium 2h2o 2h2 +o2. if y mole of h2o are dissociated and the total pressure maintained is p, calculate hte kp. please explain every step.. thank you | askiitians.com | 2021.25 | [
{
"text": "dear student. 12.123 has 5 significant figures and 3 decimal places. 12.0123 has 6 significant and 4 decimal places. it is incorrect to take numbers apart and refer to individual portions as having their own significant figures. here is a good example: the log of a product is equal to the sum of the logs of each multiplier: log(2.73 ×10^–5) = log(2.73) + log(10^–5) log(2.73) = 0.436: the answer has three significant figures, reflecting the possible error in the last digit of 2.73. log(10^–5) = –5.000000000...: the answer has an infinite number of significant digits because 10^–5 is an exact number and has no error. then, log(2.73×10^–5) = log(2.73) + log(10^–5) = 0.436 + (–5.00000000...) requires that we use the rules for significant digits for sums, i.e., we can only add to the same decimal place as the value with the least significance. in this case, that is the third decimal place from 0.436, so 0.436 + (–5.000) = –4.564 or log(2.73 ×10^–5) = –4.564 cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. http://www.askiitians.com/packages/packages.aspx so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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fb46ee829b038dfe8d8d9ebd8c7e4546 | what does trivial solution means | askiitians.com | 2021.21 | [
{
"text": "for any homogenous equation we can determine easily that its one of the roots is(0,0,0) lets take an example ax+by+nc=0 rather solving we could easily determine that the following plane passes via (0,0,0) and this 0 is known as the trivial solution",
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"text": "or simply the origin",
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6ca2a236c0905e599625e7f7db15619f | find the differential equation of motion of a spring mass oscillator. find its solution for displacement. also find the expression for angular frequency w,frequency and period of oscillation. | askiitians.com | 2021.31 | [
{
"text": "time period ( t ):- it is the time taken by the particle to complete one vibration. t = 2π/ ω frequency ( f ):- it is the number of vibrations made by the body in one second. (a) f =1/ t (b) f =1/2π√ k / m angular frequency ( ω ):- (a) ω = 2π/ t",
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f97dac2eb0ae1c4ad1f2e1ed36c8760d | what is electrolysis? give the products obtained at the pt anode and cathode respectively in the electrolysis of (a) fused nac l (b) aqueous solution of k 2 so 4 . | askiitians.com | 2021.21 | [
{
"text": "p { margin-bottom: 0.08in; } the process of decomposition of a chemical compound (either in molten state or in aqueous state) into its constituent elements under the influence of emf is called electrolysis. (a) at cathode: na is produced; at anode: c l 2 is liberated. (b) at cathode: h 2 is liberated; at anode : o 2 is liberated.",
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368d2010821cebef13be6a1a4db7215a | what is etching of glass ? | askiitians.com | 2021.25 | [
{
"text": "dear student, etching refers to the technique of creating art on the surface of glass by applying acidic, caustic, or abrasive substances. traditionally this was done after the glass was blown or cast.",
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fe668ecfbd7547712a67f001b5fd7949 | i am not able to register as i try to register everytime it shows” no such roll no. registration not complete “please help me | askiitians.com | 2021.43 | [
{
"text": "check if you are eligible for counselling. sher mohammad faculty askiitians b.tech, iit delhi",
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951ba32fc3db7f5c00f28eaeadc5c4a3 | solve integral of [(cos 2 2x) / cos 2 x ] dx | askiitians.com | 2021.43 | [
{
"text": "hi, {cos2x/cos(x)}^2 = {(2cos^2(x)-1)/cosx}^2 => {2 cosx-secx}^2 = {4(cosx)^2+(secx)^2-4} => {2{2(cosx)^2 -1} -2 +(secx^2)} => 2cos(2x)dx -2dx +9secx)^2dx => integral of {cos2x/cos(x)}^2 = integral of 2cos(2x)dx -2dx +9secx)^2dx = sin(2x) -2x +tan(x)+c.",
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b13a48c967ef668d8c68f688bdead9c5 | the normal body-temperature of a person is 97°f. calculate the rate at which heat is flowing out of his body through the clothes assuming the following values. room temperature = 47°f, surface of the body under clothes = 1.6 m2, conductivity of the cloth = 0.04 j/m-s-°c, thickness of the cloth = 0.5 cm. | askiitians.com | 2021.25 | [
{
"text": "sol. k = 0.04 j/m-5°c, a = 1.6 m^2 t base 1 = 97°f = 36.1°c t base 2 = 47°f = 8.33°c l = 0.5 cm = 0.005 m q/t = ka(θ base 1 – θ base 2)/l = 4 * 10^-2 * 1.6 * 27.78/5 * 10^-3 = 356 j/s",
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c257d183d8e3d24745aa1956e6dcef0d | what made keplar realise that planetary orbits are elliptical?? | askiitians.com | 2021.21 | [
{
"text": "dear araku obital velocity which is derived by assumin that orbit is circular. v=√gm/a ,this should be always perpendicual to the line joining from the planet to sun and constant .but it is not actual case.so from these kepler's made a conclusion that oribita are not cercular but eleptical. please feel free to post as many doubts on our discussion forum as you can. if you find any question difficult to understand - post it here and we will get you the answer and detailed solution very quickly. we are all iitians and here to help you in your iit jee preparation. all the best. regards, askiitians experts badiuddin",
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6ceb1a4f19207d3be9f4c243aa7e4b70 | m1v1/n1=m2v2/n2 what is the value of v1 and v2.................. | askiitians.com | 2021.43 | [
{
"text": "dear samridhi, your question is unclear, as u have not stated wwhat n1 and n2 are respectively. v1 and v2 sseems here the velocity as they both are associeated with the mass element which results into momenta simple.",
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af7e49e4e66e49b83575cba30645048e | (1) two particles, each of mass m and carrying charge q, are separated by some distance.if they are in equilibrium under mutual gravitational and electrostatic forces,then q/m (in c/kg) is of the order of (a) 10 -5 (b) 10 -10 (c) 10 -15 (c) 10 -20 | askiitians.com | 2021.25 | [
{
"text": "k q 2 /r 2 = gm 2 /r 2 q 2 /m 2 = g/k = 6,6 x 10 -11 /9 x 10 9 = 10 -20 approve if i helped :)",
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{
"text": "10^-15",
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{
"text": "guess its c!",
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"text": "repulsive electrostatic force: attractive gravitational force: f 1 =kq^2/r^2 f 2 =gm^2/r^2 for equilibrium :f 1= f 2 kq 2 /r 2 =gm 2 /r 2 => q/m = (6.6*10^-11/9*10^9) 1/2 => q/m=0.8*10 -10 hence, order of q/m=10 -10",
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{
"text": "dear student, please find the solution to your problem below. repulsive electrostatic force(since charges are same in magnitude and sign): f 1 = kq 2 /r 2 attractive gravitational force: f 2 = gm 2 /r 2 for equilibrium :f 1 = f 2 kq 2 /r 2 = gm 2 /r 2 => q/m = (6.6*10 -11 /9*10 9 ) 1/2 => q/m=0.8*10 -10 hence, order of q/m=10 -10 hence (b) is the correct option. hope it helps. thanks and regards, kushagra",
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27cef0c8981781955c5303bf495335e9 | sir,can u please tell me the aieee cut off rank for iiit hedrabad,iiit allahabad & mnit allahabad individually. | askiitians.com | 2021.21 | [
{
"text": "dear akshay, check out the opening and closing rank for collages under aieee: http://www.askiitians.com/aieee-counselling/aieee-engineering-counsellings.aspx click for barch openining and closing : http://www.askiitians.com/aieee-counselling/architecture-counselling.aspx we are all iitians and here to help you in your iit jee preparation. all the best. if you like this answer please approve it.... win exciting gifts by answering the questions on discussion forum sagar singh b.tech iit delhi",
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51477a9025c34fcc0c2a1d42f695797a | a man throws balls with the same speed vertically upwards one after the other at an interval of 2 second. what should be the speed of the throw so that more than two balls are in the sky at any time? (given g=9.8 m/s^2)1)more than 19.6 m/s2)at least 9.8 m/s3)any speed less than 19.6 m/s4)only with speed 19.6 m/s | askiitians.com | 2021.21 | [
{
"text": "if there are to be atleast three balls in the sky at a time, it means that the first ball must have just reached the ground at the third throw. but the balls are thrown at an interval of 2 seconds. therefore the time of flight of the balls must be 2s+2s=4s.",
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bcd4c4539466659327076048ce919ef2 | hi, i am a dropper. can u please suggest me some objective books for phiysics iit jee except hc verma and dc pandey which can give me lots of practice. | askiitians.com | 2021.25 | [
{
"text": "reference books for engineering entrance exam chemistry ncert chemistry text books of class xi and class xii (usually sufficient) organic chemistry by morrison and boyd (only for understanding concepts) arihant organic chemistry objective (optional) organic, physical and inorganic chemistry books by op tandon physical chemistry by rc mukherjee mathematics ncert class xi and class xii books (all students should start with these early) for best concepts you can purchase ‘iit mathematics’ by ml khanna new pattern iitjee mathematics of arihant publications by dr sk goyal books by sl loney (good for coordinate geometry and trigonometry) rd sharma gn bernnam – only use it for calculus as other sections are too advanced for jee physics ncert physics for class xi and xii (good introduction) concepts of physics, vol.-i & ii, by hc verma physics by d.c. pandey, arihant publications fundamentals of physics, by halliday, resnik and walker (optional)",
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cefdee568fc6d46c6a46f05b1e19b3e7 | sir i am expectin 150+ marks in jee main exam . i am a general category student. can i get admission in nit? | askiitians.com | 2021.39 | [
{
"text": "its depend on your class 12 marks also.because it bears a good percentage(40%) simply 150 score cant be concluded anything. thanks and regards sunil kr askiitian faculty",
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] |
|
dedccb3ddd9b462e386daa81c377b716 | hello. i got 85 marks in jee advanced. i hav sc quota. can i get into iit ? | askiitians.com | 2021.43 | [
{
"text": "sure keep it up u will never get into it. hello student, please check the solution of your question. given below: cosa+cosb=1 2cos(a+b/2)cos(a-b/2)=1 2(root3/2)cos(a-b/2)=1 cos(a-b/2)=1/root3 cos(a-b)=2cos2(a-b/2)-1= 2*1/3-1= -1/3",
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c33c2ea8d5b6af4d4d481ed0f9417605 | marks is 30, sc category am i eligible for iisc ug entrance | askiitians.com | 2021.39 | [
{
"text": "dear anandi check the link below: http://www.askiitians.com/aieee/aieee-2009-cut-offs cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
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}
] |
|
7b5ad798edf6e57a5aaf5c28e6eb6913 | what is an intrinsic semiconductor?define intrinsic semiconductor | askiitians.com | 2021.25 | [
{
"text": "semiconductors that are chemically pure, in other words, free from impurities are termed as intrinsic semiconductors. the number of holes and electrons is therefore determined by the properties of the material itself instead of the impurities. in intrinsic semiconductors, the number of excited electrons is equal to the number of holes; n = p . they are also termed as undoped semiconductors or i-type semiconductors. silicon and germanium are examples of i-type semiconductors. these elements belong to the ivth group of the periodic table and their atomic numbers are 14 and 32 respectively.",
"name": "",
"is_accepted": false
},
{
"text": "semiconductor that are chemically pure means they are free from impurities like aluminum or phosphate is called intrinsic ssemiconductor.",
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"is_accepted": false
}
] |
|
a00cc519adb6bed877c9e07bdc26f5aa | sir i m getting total of 213 in iitjee 2011 with 46 in chem, 61 in phy,and 106 in maths.what rank and which iit i can expect? | askiitians.com | 2021.25 | [
{
"text": "around 5500-6000.....you can get some remote branches in iit kgp.. and some good branches in ism dhanbad",
"name": "",
"is_accepted": false
},
{
"text": "http://www.resonance.ac.in/reso/news/iit-jee-2011-rank-predictor.aspx open this link, u can predict ur rank here... plz approve...",
"name": "",
"is_accepted": false
}
] |
|
abf1f8f3cd7a5c7e58e80011ec9208d6 | equation of a common tangent with positive slope to the circle as well as to the hyperbola is | askiitians.com | 2021.43 | [
{
"text": "dear student please attach the image of the question regards",
"name": "",
"is_accepted": false
}
] |
|
650f87ea3f2bd93d2cf2fd26cc232243 | im in st category and i got following rank,im from maharashtra,will i get any nits,will i get vnit nagpur for any branch all india rank overall 226496 ------ category 3670 ------ state rank overall 16300 ------ category 141 ------ | askiitians.com | 2021.31 | [
{
"text": "dear anish, according to last year cut-ofs, you may not get admission at vnit nagpur at your rank, you may get admission in other private colleges at you rank. best of luck cracking iit just got more exciting,it’s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win exciting gifts by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple click here to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
"name": "",
"is_accepted": false
}
] |
|
e82fea15e91e326347b71b68b2f0dacd | why do we classify organisms? why do we classify organisms? why do we classify organisms? | askiitians.com | 2021.43 | [
{
"text": "dear student we classify organismsfor easier and convenient study thanks",
"name": "",
"is_accepted": false
}
] |
|
dbf2ca45228923e4a0966b93652b8790 | energy released in fission of uranium is 200mev where as enrgy released in fusion of 4 hydrogen nuclei is 24.7mev which is greater | askiitians.com | 2021.21 | [
{
"text": "energy released in fusion is greater because energy released always compared in per unit mass. energy reased in fission of uranium = 200/238 = 0.84mev/amu energy reased in fusionof 4 hydrogen = 24/4 = 6mev/amu. hope it clears. if still you doubt you can ask me. if you like anser then please approve it.",
"name": "",
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}
] |
|
1029fd078a4a6029982458bd08b46069 | what does the transaction details mean in the declaration form | askiitians.com | 2021.43 | [
{
"text": "hello dear student, you have to give the transaction details of the counselling fee , you give the reference number of acknowledgment slip of the payment made to iit.",
"name": "",
"is_accepted": false
}
] |
|
2540f1d0313347ff1b9c541fde31a65e | it in nit surathkal or mnnit allahabad... what is average package in it in above 2 | askiitians.com | 2021.21 | [
{
"text": "let me first clear you that both are good nits. if you are performing well in your stream and have the knowledge about it, you will definetly get the good job from the campus itself. both the institute has the good record in terms of placement too. may be average package may vary. for actual statistics of the package you can refer to there website.",
"name": "",
"is_accepted": false
},
{
"text": "both the options you mentioned are good you can visit the official page of nit suratkal or mnnit allahabad",
"name": "",
"is_accepted": false
}
] |
|
89ac6057b1a9a825070c55534da78bb0 | how many times did you fall ill in the last year? what were the illnesses? (a) think of one change you could make in your habits in order to avoid any of most of the above illnesses. | askiitians.com | 2021.39 | [
{
"text": "dear student the illness was 2-3 times, coon-cold, oceued in a year. one change i would make in my habits in order to avoid the above illness is that i would take proper diet rich in vitamin c and would avoid too cold food. thanks",
"name": "",
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}
] |
|
80a5618770bb0fe1f1a826d5a91f2956 | the number of hexagonal faces that are present in a truncated octahedron is ? | askiitians.com | 2021.21 | [
{
"text": "dear student the answer is 14 regards",
"name": "",
"is_accepted": false
},
{
"text": "14 faces in geometry, the truncated octahedron is an archimedean solid. it has 14 faces (8 regular hexagonal and 6 square), 36 edges, and 24 vertices. since each of its faces has point symmetry the truncated octahedron is a zonohedron.",
"name": "",
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}
] |
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802913c6b27f0533bf7f41cea5a356e7 | sir explain this with all the steps included and reply as fast as possible please | askiitians.com | 2021.39 | [
{
"text": "dear student option 4 should be correct as angle abc = angle cdg . ( angles on parallel lines and alternate angles) now angle cdg = angle fde. (vertically opposite angles)",
"name": "",
"is_accepted": false
}
] |
|
99cafb51bd5f80703a86681f73233b6a | the heat of neutralisation of naoh with h2so4 is -6okj. the heat released by mixing 0.5 mole of hcl and 0.2 mole of naoh in the aqu. solution will b 1) 12kj 2) -12kj 3) 60kj 4) 30kj | askiitians.com | 2021.25 | [
{
"text": "dear apeksha ... you can check the solution for this answer on this link and get the better understanding of neutrlization reaction as http://abacus.bates.edu/~raustin/fluxflow/108b%20lab%20manual\\_2006.pdf",
"name": "",
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] |
|
39cb5b808157e3da36eb54dff39efb7c | give the names of the elements present in the following compounds: (c) baking powder | askiitians.com | 2021.39 | [
{
"text": "dear student baking powder → calcium hydrogen carbonate elements → calcium, hydrogen, carbon and oxygen thanks",
"name": "",
"is_accepted": false
}
] |
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2022b349f14233c6a3c2dd95472883a4 | an artificial satillite is moving uniformly in a circular orbit of radius 42250km . find its speed if it takes 24 hour to revolve around the earth. | askiitians.com | 2021.25 | [
{
"text": "let us assume an artificial satellite, which is moving in a circular orbit of radius 42250 km covers a distance ‘s’ as it revolve around earth with speed ‘v’ in given time ‘t’ of 24 hours.= 42250 radius of circular orbit r time taken by artificial satellite t=24 hours distance covered by satellite s =circumference of circular orbit speed of satellite v = 3.073 km/s",
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"is_accepted": false
}
] |
|
041920c5384a5893005076e921912c33 | suppose that you need to measure whether a tabletop in a train is truly horizontal. if you use a spirit level, can you determine this when the train is moving down or up a grade? when the train is moving along a curve? (hint: there are two horizontal components.) | askiitians.com | 2021.43 | [
{
"text": "the spirit level consists of a solution which has a bubble inside the tube. the bubble stays at the marked center position of the level if the surface on which the spirit level is kept is horizontal. the bubble stays at the center (reference position) because equal amount of solution exist symmetrically along the length of the level. the symmetrical distribution of solution around the position of bubble indicates that there is no net force on the solution and the weight of the solution is supported by the reaction from the table. when the train starts to move up a grade, the forces run out of the balance and there is a net component of force on the solution which pushes the solution in the direction opposite to the direction of motion of train. this makes the bubble move in the direction of the train, and one can eventually know that the train is climbing the grade. similarly, when the train moves down the grade there is a net component of force on the solution which pushes the solution in the direction of the train. this makes the bubble to move opposite to the direction of motion of train and one can know from the change in bubble position that the train is moving down the grade. when the train moves horizontally in a circular path, centrifugal forces act on the solution in the spirit level. this force will push the bubble away from the marked position, but the bubble stays in the center of the level. therefore from the change in bubble position, one can know that the train has moved on a curved path on a horizontal surface.",
"name": "",
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] |
|
8c7c3eeba8103af08aeb925f171a3b70 | wat r the constituents of alloys steel , bell metal , invar? | askiitians.com | 2021.21 | [
{
"text": "dear jaya priya, an alloy is a mixture or metallic solid solution composed of two or more elements. complete solid solution alloys give single solid phase microstructure, while partial solutions give two or more phases that may or may not be homogeneous in distribution, depending on thermal (heat treatment) history. alloys usually have different properties from those of the component elements. bell metal is a hard alloy used for making bells. it is a form of bronze, usually approximately 4:1 ratio of copper to tin(78% copper, 22% tin). bell metal ore is a sulfide of tin, copper, and iron called stannite. invar , also known generically as feni36 ( 64feni in the us), is a nickel iron alloy notable for its uniquely low coefficient of thermal expansion (cte or α). the name, invar , comes from the word invariable , referring to its lack of expansion or contraction with temperature changes. all the best! please approve my answwer by clicking yesgiven below!!",
"name": "",
"is_accepted": false
}
] |
|
8dc42de88f913566ae7911657b815800 | dear sir/madam, how do we approach once we get the aieee ranking? pl. arrange to give us the expected colleges on the ranking basis. thanks subir kar | askiitians.com | 2021.21 | [
{
"text": "hii you login for the central counseling . then you fill the colleges according to the preferences in decreasing order of priority. when seat allocation starts you can chreck that on regular intervals to get the information that what is the seat that you have got",
"name": "",
"is_accepted": false
}
] |
|
80ac5dd2980b409cb53a9e38cbafda30 | 3/5 of a road is to be resurfacedif road 13/5 km long what length in kilometre | askiitians.com | 2021.25 | [
{
"text": "the length in kilometre would be 39/25 km if 3/5 of a road is to be resurfaced as 3/5 * 13/5 is the answer.",
"name": "",
"is_accepted": false
},
{
"text": "total length of the road is 13/5 kilometre. resurfaced part of road is 3/5 of total length.so total length of resurfaced road is 13/5×3/5 km=39/25 km",
"name": "",
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},
{
"text": "3/5 of a road is to be resurfaced.if the road is 13/5 km long.what length in kilometers is to be resurfaced?",
"name": "",
"is_accepted": false
},
{
"text": "the resurfaced length in km = 39/25. the fraction of road resurfaced is 3/5 of total of 13/5 km lenth. so resurfaced length = 3/5*13/5 = 39/25.",
"name": "",
"is_accepted": false
}
] |
|
3d46ed955f769f08b20d95fee6a63fbc | 1. fill in the blanks: (a) production of new individuals from the vegetative part of parent is called\_\_\_\_\_\_\_\_\_\_\_\_\_. (b) a flower may have either male or female reproductive parts. such a flower is called\_\_\_\_\_\_\_\_\_\_\_\_\_. (c) the transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as \_\_\_\_\_\_\_\_\_\_\_\_\_. (d) the fusion of male and female gametes is termed as \_\_\_\_\_\_\_\_\_\_\_\_\_. (e) seed dispersal takes place by means of \_\_\_\_\_\_\_\_\_\_\_\_\_, \_\_\_\_\_\_\_\_\_\_\_\_\_ and \_\_\_\_\_\_\_\_\_\_\_\_\_. | askiitians.com | 2021.31 | [
{
"text": "(a) production of new individuals from the vegetative part of parent is called \\_\\_vegetative propagation\\_\\_ . (b) a flower may have either male or female reproductive parts. such a flower is called \\_\\_unisexual\\_\\_ . (c) the transfer of pollen grains from the anther to the stigma of the same or of another flower of the same kind is known as \\_\\_pollination\\_\\_ . (d) the fusion of male and female gametes is termed as \\_\\_fertilisation\\_\\_ . (e) seed dispersal takes place by means of \\_\\_wind\\_\\_ , \\_\\_water\\_\\_ and \\_\\_animals\\_\\_ .",
"name": "",
"is_accepted": false
}
] |
|
23674ea0d467d892e9f03148129c378e | a soap bubble has radius 2 cm. the work done in bobbling the radius is (surface tension is 30 dynes/cm). (a) 9050 erg (b) 4525 erg (c) 8050 erg (d) 3525 erg | askiitians.com | 2021.43 | [
{
"text": "",
"name": "",
"is_accepted": false
},
{
"text": "dear student please refer the clear image , the image above does not looks good , it is blurr. hope for the best good luck cheers",
"name": "",
"is_accepted": false
}
] |
|
0a3e9ca1c89f2507ef6fb63cb3b07d7f | sir i want to learn it but i am unable it do so. i what should i do so as i should get it can you please help me in doing so | askiitians.com | 2021.21 | [
{
"text": "dear student what is the specific topic you wish to get help",
"name": "",
"is_accepted": false
}
] |
|
fd17de7eb853d74d2e82d7dcd26cbcb5 | what are the “building blocks of life” ? why are they so called ? | askiitians.com | 2021.21 | [
{
"text": "cells are building blocks of life because all living things are made up of one or more cells.",
"name": "",
"is_accepted": false
}
] |
|
3192ee307ecd48671c7247c4ba5c3d43 | if i am not in 20 percentile this year can i change the board from cbse to state board to be in 20 percentile next year and to apper for jee advance next year | askiitians.com | 2021.21 | [
{
"text": "yes you can but you have to explain your reason to change the board and one gap year in between that you have faced.",
"name": "",
"is_accepted": false
}
] |
|
556942f1d913d68f01b84020f0718b9d | an inductor is connected to a battery through a switch. explain why the emf induced in the conductor is much larger when the switch is opened as compared to the emf induced in when the switch is closed. | askiitians.com | 2021.39 | [
{
"text": "dear nikhil , when you close the switch hte current takes some time to build in the circuit and rate is say r. due o this rate of growth the flux increases and emf is induced. when you open the switch , there is no path for current to flow , so it suddenly drops to zero unlike in closing case.so , rate of decrease of current or flux is much more in openning than in closing. so , emf induced is more. please feel free to post as many doubts on our discussion forum as you can. we are all iitians and here to help you in your iit jee preparation. now you can win exciting gifts by answering the questions on discussion forum. so help discuss any query on askiitians forum and become an elite expert league askiitian. win exciting gifts by answering the questions on discussion forum",
"name": "",
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}
] |
|
fb412fbf3d3076c1e34e43cdf12c5efe | sir i am getting aieee rank in 16000 to 20000 range and i am from punjab. so which are the colleges you'll suggest me to apply in?? | askiitians.com | 2021.21 | [
{
"text": "dear sunny, u probably apply for iiits or lower nits, like nagpur, srinagar, jabalpur, etc.!!!!!!!! good luck!!!!!!!!!!!!! plz. approve by clicking 'yes' given below!!!!!!!!! plz. plz. plz.!!!!!!!!!!!!",
"name": "",
"is_accepted": false
}
] |
|
fb4b631673d15c4a9e153d0bfaa267ef | how can i calculate equivalent resistance in above figure? | askiitians.com | 2021.39 | [
{
"text": "plesae upload the supporting document",
"name": "",
"is_accepted": false
}
] |
|
71fb0f76b5331261befa54f32130089b | <p>sir i have appeared in wbjee 2010 and i want to know list of top 10 engineering colleges in west bengal .</p> <p>pls reply me as soon as possible</p> <p>my email id- [email protected]</p> | askiitians.com | 2021.31 | [
{
"text": "hi, top engineering colleges in west bengal 1) faculty of engineering jadavpur university, kolkata. ph: +91-33-24146000 the college is rated as best among engineering institutions in west bengal due to maintenance of high academic standards and laboratory facilities. they also have efficient placement cell to provide best opportunities for students for m.tech. useful links: www.jadavpur.edu/ 2) bengal engineering and science university howrah, west bengal. ph: +91-33-26684561 the institution offers undergraduate courses in various branches of engineering and technology. the facilities provided in the college are up to international standards and can create excellent professionals. useful links: http://www.becs.ac.in 3) kalyani govt. engineering college nadia, west bengal. e-mail: [email protected] considering the value of humane concerns and loyalty to the society along with high quality education, kgec provides modern facilities and coaching for students. they are dedicated to create good citizens with thorough knowledge in basic concepts. useful links: http://kgec.edu.in 4) marine engineering & research institute kolkata, west bengal. ph: +91-33-24014673 meri is rated as one of the premier institute of world class in west bengal with eminent instructors giving proper guidance. modern instrumentation facilities provided in laboratories help students to improve skills. useful links: http://www.merical.ac.in 5) university college of science and technology university of calcutta, kolkata. ph: +91- 33 22410071 this engineering department in this university is renowned by talented engineers and technicians who got pass out and have attained high positions in and abroad india. the placement and industrial interface division is much effective in this college. useful links: http://www.caluniv.ac.in/academic/academic\\_frame.htm 6) university institute of technology burdawan university, west bengal. ph: + 91-342-2533913 graduation and post graduation courses in various branches of engineering and technology by the institute is structured to create excellent professionals for the country. they also facilitate improvement of extracurricular activities among students. useful links: http://www.buruniv.ac.in/ 7) govt. college of engineering. & ceramic technology kolkata, west bengal. ph: +91-33- 23701264 the college is counted as one among top centers providing undergraduate courses in ceramic technology and other branches of engineering. eminent readers and lecturers are keen in incarnating engineers with responsibility and generosity. useful links: http://www.gcect.ac.in 8) institute of jute technology kolkata, west bengal. ph: +91-33- 24615444 the institute offers undergraduate and postgraduate courses in textile technology and other aspects. 30 seats are available for b.tech and 18 seats for m.tech course useful links: http://www.ijtindia.org 9) b.p. poddar institute of management & technology vip road, kolkata. ph: +91-33-25739607 rated as one among the best institutions with excellent instructors and instrumentation facilities, \\_\\_\\_\\_\\_\\_ tries to maintain discipline among students. they are aiming to produce engineers with solid technical concepts and humane concerns. useful links: 10) institute of engineering and management electronic complex, kolkata. ph: +91-33-23578189 this private institution has been able to create solid industrial linkage and also has proven track records of placement. the excellent environmental condition for nurturing talents is another specialty of this institute. useful links: http://www.iemcal.com/ regards vijay luxmi",
"name": "",
"is_accepted": false
}
] |
|
bf9759ec38ba0e8569bbd06de558fb81 | it is known that syphilis can be transmitted through blood, so it is significant to choose a method with high specificity and affinity to test syphilis when do the blood screening. which is the best way to test syphilis? | askiitians.com | 2021.21 | [
{
"text": "u can use various several other methods for testing of syphillis as well 1- elisa (enzyme linked immnue serbent assay ) 2- pcr 9polymerase chain reaction )",
"name": "",
"is_accepted": false
}
] |
|
c924f49453af85f40500e979a2d440bf | can u plz give the name of computer science book prescribed by cbse? | askiitians.com | 2021.31 | [
{
"text": "i hope the query is resolved.",
"name": "",
"is_accepted": false
}
] |
|
f6fc47b581e5cbd5e5284feeaeb73d0c | which part in jee advance exam is the toughest physics , chemistry or maths ? | askiitians.com | 2021.43 | [
{
"text": "dear student, no part is tough in any subject for jee advance. if you have study every conecpt throughly,then you feel no topic tough. thanks & regards rinkoo gupta askiitians fcaulty",
"name": "",
"is_accepted": false
},
{
"text": "nothing is tough in it. which topic u did`nt studied properly that makes it tough. so heed on each concept properly.. all the best",
"name": "",
"is_accepted": false
}
] |
|
563cdd90cc2fbad20ca14f7b73bccc69 | sir, i am getting 143( not including 1 wrong ques in phy)in aieee 2012. the rank shown by resonance is between 20000 to 25000 (air) , is it the correct approcimated rank, also what should be my near rank according to you. plz help thankyou in advance | askiitians.com | 2021.25 | [
{
"text": "dear raj it can not be predicted correctly. cracking iit just got more exciting,it s not just all about getting assistance from iitians, alongside target achievement and rewards play an important role. askiitians has it all for you, wherein you get assistance only from iitians for your preparation and win by answering queries in the discussion forums. reward points 5 + 15 for all those who upload their pic and download the askiitians toolbar, just a simple to download the toolbar…. so start the brain storming…. become a leader with elite expert league askiitians thanks aman bansal askiitian expert",
"name": "",
"is_accepted": false
},
{
"text": "no according to my experience u will get rank from 25,000 to 30,000...............lets see hope for the best and about college u can try for vit",
"name": "",
"is_accepted": false
},
{
"text": "on what basis you predicted your marks?asper that marks your air around 25000 ,if you are general category difficult to get good top nits. do u approve my answer?",
"name": "",
"is_accepted": false
}
] |
|
e71921e7701d7cb112fa20b594e67d4e | wat do u think will eml be declared? or if not then how will admission take place to rgipt and iiser. | askiitians.com | 2021.39 | [
{
"text": "if eml is not declared seats in rgipt and iiser will be filled on jee ranks or it may conduct its own seperate exam thanks",
"name": "",
"is_accepted": false
}
] |
|
c12af6428dfef98e12e6ad4cda05de50 | will a solid metal sphere hold a larger electric charge than a hollow sphere of the same diameter? where does the charge reside in each case? | askiitians.com | 2021.31 | [
{
"text": "a solid metal sphere will hold the same amount of charge as is held by a hollow sphere of the same diameter.as in both the cases, the charge resides on the surface and having same surface area implies the same charge on both spheres",
"name": "",
"is_accepted": false
}
] |
|
70da2ff40d7ffa79a3ba6a4b8d97d2a3 | is this relation dimensionally correct s=u+a/2(2n-1) where u is initial velocity a is acceleration and s is distance travelled in nth second | askiitians.com | 2021.25 | [
{
"text": "hi yes this relation is dimensionally correct. because s is taken as distance in one second. thanks",
"name": "",
"is_accepted": false
}
] |
|
58c628a301c30e6862450ebc630fe2fa | what should be my order of preference iit roorkee cs, iit bombay electrical(5 years) and iit delhi mathematics and computing(4 years) i have air 264(obc) | askiitians.com | 2021.21 | [
{
"text": "iit roorkee cs> iit bombya electrical > iit d",
"name": "",
"is_accepted": false
}
] |
|
cbd65329474493e9d255947b71a760c9 | im getting 162 marks in aieee 2012 .will i get nit raipur mechanical or mechanical in any other nit .i belong to chattisgarh state | askiitians.com | 2021.43 | [
{
"text": "dear student i hope the query would have been resolved by now.all the best.",
"name": "",
"is_accepted": false
}
] |
|
515e477840b22392749916fe9dea0bb7 | we will say that forward and backward reaction does not depend upon activation energy.but if we see that if activation energy of forward reaction is greater than activation energy of backward reaction then backward reaction will be favoured. | askiitians.com | 2021.25 | [
{
"text": "hi before the reactants can be converted into products, the free energy of the system must overcome the activation energy for the reaction, as shown in the figure below. the vertical axis in this diagram represents the free energy of a pair of molecules as a chlorine atom is transferred from one to the other. the horizontal axis represents the the sequence of infinitesimally small changes that must occur to convert the reactants into the products of this reaction. to understand why reactions have an activation energy, consider what has to happen in order for clno 2 to react with no. first, and foremost, these two molecules have to collide, thereby organizing the system. not only do they have to be brought together, they have to be held in exactly the right orientation relative to each other to ensure that reaction can occur. both of these factors raise the free energy of the system by lowering the entropy. some energy also must be invested to begin breaking the cl-no 2 bond so that the cl-no bond can form. no and clno 2 molecules that collide in the correct orientation, with enough kinetic energy to climb the activation energy barrier, can react to form no 2 and clno. as the temperature of the system increases, the number of molecules that carry enough energy to react when they collide also increases. the rate of reaction therefore increases with temperature. as a rule, the rate of a reaction doubles for every 10 o c increase in the temperature of the system. this explains why backward reaction wud be favored if activation energy of backward rxn is lower as the probability of the products colliding and forming back the reactants wud be more , as they can overcome the threshold activation energy easily.",
"name": "",
"is_accepted": false
}
] |
|
26b1c07aabebd320a3023ff73f52981b | an object is thrown horizontally from the open
window of a building. if the initial speed of the
object is 20 m/s and it hits the ground 2.0 s later,
from what height was it thrown? (neglect air
resistance and assume the ground is level.) please give process | askiitians.com | 2021.43 | [
{
"text": "since the object is thrown horizontally vy=0 t=2s vx=20 applying equation in vertical direction h=ut +1/2gt^2 h=1/2*9.8*4 =19.6m/s^2 thanks and regards sunil kr askiitian faculty",
"name": "",
"is_accepted": false
}
] |
|
67b21fc1951211323fe96481b1179363 | is there any chance to lower the cut off from 17.5% for pd category ? | askiitians.com | 2021.31 | [
{
"text": "this year, cut off would be down due to paper pattern.. 50% paper was on the basis of 50% negative marking.. so hope positively...",
"name": "",
"is_accepted": false
}
] |
|
1a45ed74f80e630b9a5442c364976dbe | write down the names of compounds represented btthe following formulae: (ii) cacl 2 | askiitians.com | 2021.43 | [
{
"text": "dear student calcium chloride thanks",
"name": "",
"is_accepted": false
}
] |
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