Recently Active Questions

if total energy of a particle is zero,is its linear momentum neccesarily zero????xplain ur answer too! ...

Pls explain why does this happen -------- Phenol on reaction with H2SO4 @ 200C gives o-phenolsulphonic acid and @ 1000C it gives p-Phenolsulphonic acid ?? ...

http://www.websiteoutlook.com/www.targetiit.com Are there any ads here ? How did they calc that ? ...

\sum_{r=0}^{n-1}{}\sum_{j=1}^{n-r}{} (n-j)Cr=? a.1 b. 2^{n} c. 2^{n}-1 d. 2^{n-1} ...

1)pls tell me the purpose of writing the constant K=1/4∩ε. And couloumb had discoverd only its numerical value by his experiments am i rite. 2)The force between two charges is inversely proportional to r2 is the power is a ...

*Image* plz show it mathematically!!!....thanx! ...

*Image* i think it shud remain constant ...........is it right??? well can u give a sort of mathematical xplanation for same? i have done mathematically.............but not quite sure of it ...... so wanna get best mathematic ...

Find the inducd electric field at a distance x from an infinitely long current carrying a slowly varying current I(t) ...

discuss the continuity of the following function...... f(x)=(sinx).(tanx).(cosx) sinx - 0 ≤ x ≤ π/4 tanx - π/4 < x ≤ 3π/4 cosx - 3π/4< x ≤ π pls help................. with solutions abt how u did it !!! pls ...

i m dropping this year ........ which coaching institute is good for dropper batch in chandigarh?? VMC , FIITJEE or ANY OTHER ...

*Image* ...

*Image* i think (B) shud be the only answer............ but answer given in book........is (B),(D)......... plz if anyne thinks d is answer too.........plz give rational arguments for that............ ...

*Image* post solution too!!!! ...

x = sin2t / cos 2t y= cos2t / cos 2t find the value of the product of the cube of y and the second derivative of y wrt x ...

*Image* POST SLUTION PLZ!!!!! ...

*Image* post solution too!!!! ...

*Image* i m getting ans. as (B) i.e. 1/2.............. is it correct????????? ...

*Image* ...

Current is scalar or vector???? ...

*Image* post ur working too!!!! ...

lim x->2(-1)[x] where [x] is the greatest integer fn. is = A. 1 B. -1 C. +-1 D. none of these ...

[url=http://www.outlookindia.com/full.asp?fodname=20090622&fname=ALead+Essay+(F)&sid=2]Rating by Outlook[/url] Read the above for ratings... ...

Is there a sequence of positive integers in which every positive integer occurs exactly once and for every k = 1, 2, 3, . . . the sum of the first k terms is divisible by k? ...

1)My friend lost all competitive exams... lost iit,aieee,bitsat(247)/srm/manipal just missed... he was out in his life... He got 262 rank in Sastra Kumbakonam branch.. now u guys have to tell.. whether he have to take long te ...

Plz giv me the list of the talent search exams, oympiads, scholarship exams,etc......... for which a student of class 12 can appear ...

How will the graph of f(x)=ln(x) look like, sir? ...

*Image* ...

*Image* *Image* is the acceleration= M'g/[M+m+M'] correct?????? ...

The space between the plates of a parallel plate capacitor is filled consecutively with two dielectric layers 1 and 2 having the thicknesses d1 and d2 and the permittivities ε1 and ε2 respectively. The area of each plate is ...

In the plane there are n points such that of any 3 points always two points can be chosen such that their distance is less than 1. Prove that within these n points there are [n+1/2] which can be covered by a circular area wit ...