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what is scintillation????????? ...

A particle is performing SHM with time period T, about O. It passes through a point P, such that op=x, with a velocity v in direction of P. What is the time elapsed before it returns back at P? ...

two rods of equal length lie with one on x-axis and other along y=x.they intersect at origin.first one moves with velocity v along +y axis and second with velocity=(v/√2)( i-j).find velocity of point of intersection of two ...

In Rutherford's gold foil experiment when a alpha particle approaches a nuclei then 1/2 mv2= 1/4piE0 2Ze2/r0 r0 is the distacne of closest approach. This distance is nearly 10-14m.So the radius of the nucleus should be less t ...

*Image* IF a thread is let loosely hanged under the infuence of →g where distance between the ends to which it is hoked is d and length of string is L then find the height????????????????????????? ( actually i want you to f ...

if there are two points which are at a vertical distance h from each other and under the influence of g then find the equation of a path under which if the body is allowed to fall will take minimum time to travel that distanc ...

what are d necessary n sufficient conditions for a no. to be divisible by 7,8,9,10,11...30 individually...??? "Asked by MAK" 7 is the only non - trivial one :) ...

WHAT IS THE OXIDATION NUMBER OF CHROMIUM IN [Cr (O2)4] PLZ SOMEONE REPLY.. THE OXIDATION NO FOR EACH O IN (O2) IS -2?????? ...

Does it always mean that when two bodies are in contact then there should be some contact force between the two? ...

Two identical cubical blocks of side l are placed on a smooth horizontal surface.A sphere of mass m is placed on the two blocks in order to fill in the gap between them.The system is kep at rest.Find the contact force on the ...

Find the product.......... HC≡CH→(CH3MgBr) A A→(CO2,H3O+)B B→(HgSO4+H2SO4)C C→(Ag2O) D FIND D ans.acetic acid ...

True or false: An electric line of force( i.e electric field) in the x-y plane is given by the equation x2 +y 2 =1 . A particle with unit positive charge, initially at rest at (1,0) in the xyplane, will move along the line of ...

I've a doubt and want it to be clearied... Let us suppose... (a - 3)2 + (b - 4)2 + (c - 8)2 + (d - 14)2 + (e - 19)2 = 0 then we've to find a + b + c + d + e...?? Now, clearly, a = 3, b = 4, c = 8, d = 14 and e = 19 and thus, ...

Let n be a positive Integer. 0<\theta _{i}<90 , such that cos^{2}\theta _{1}+cos^{2}\theta _{2}+cos^{2}\theta _{3}+.....+cos^{2}\theta _{n} = 1 PROVE THAT: tan \theta _{1}+tan \theta _{2}+tan \theta _{3}+...+tan \theta ...

Closed forms of the sum of powers for fixed values of m S_m(n) = \sum_{k=1}^n k^m = 1^m + 2^m + \cdots + n^m \, are always polynomials in n of degree m + 1. Note that Sm(0) = 0 for all m ≥ 0 because in this case the sum is ...

Given a function, f differentiable on (0,∞) & the limit as x→∞ of (f(x)+f'(x))=0. Find the limit of f(x) as x→∞. ...

is jagdamba singh good book fr organic chem...plzx tll ...

is there a formula for finding out the no. of squares in a square??????? for example a chessboard.................... ...

where can i get OFFICIAL answer to previous AIEEE papers? ...

we know that photons are mass less energy particles given by einstein. bt he gave a formula E=mc2 then what does m represents ...

A uniform rod of mass M and length l is hinged about the mid point O so that it can freely rotate on OXY plane about the OZ axis. An impulse J is applied at the end of the rod as shown. The angular velocity of the rod, immedi ...

no. of ways to place x things in y boxes. what does word place mean here either (i)to distribute OR (ii)to arrange i have seen most book authors have given answer with reasoning (i) to be correct...i.e. finding no of division ...

I Cannot Prove the following: Please help me to Prove It *Image* *Image* How to Prove These Results ?? Thanks I Advance (If you solve it !!) ...

Can ex be differentiated at the point 0. ...

1.in a uniform electric field, potential at origin is V, and V/2 at (a,0,0),(0,b,0),(0,0,c).The potential at (a,b,c) 2.A metal sphere of radius r caries a total charge Q, what is the force of repulsion between the two hemisph ...

IT IS AN OXIDISING AGENT RYT??? WHT WILL HAPPEN IF P4O10 IS ADDED TO 1,3 PROPANDIOIC ACID OR TO 1-2 PROPANDIOIC ACID??? ...

find the h.c.f(or clasically g.c.d [3]) of 2nC1,2nC3,2nC5,.......,2nC2n-1 where n=2m * q, where q is an odd integer. ...

This is for class IX X only a(a+b+c) = 10 b(a+b+c) = 12 c(a+b+c) = 14 Find a, b, c ...

if the expression 16x4 - 24x3 +41x2 – nx +16 is a perfect square then the value of ‘n’ is. ...

1)what is meant by radial magnetic field?? 2)while converting galvanometer into ammeter why we connect small resistance parallel to galvanometer? ...