Homework Statement
I understood the fact that since the density of solids and liquids remain constant in a reaction therefore the active mass must be a constant.But why is it that we take it as unity. Is is some kind of coonverntion,or is there a reason behind it?
Homework EquationsThe Attempt...
Homework Statement
Consider a rectangular isolated(non-conducting) chamber as shown below. The chamber is divided into three compartments. The wall separating A and B has negligible mass, no friction and is conducting, while the wall separating B and C has negligible mass and friction and is...
what if the hollow sphere is surrounded by charges, the field is still zero.how is that possible?(the empty space inside the hollow sphere is not conducting)
if we have a solid conducting sphere with charges around it, then the elctric field inside the sphere is zero otherwise the electrons of the sphere would not be in equilibrium as there would be a net force acting on it. however if its a hollow sphere then why does the electric field inside the...
if a ball of mass m were to strike an fixed incined plane of 45degress with velocity of 3m/s, and was rebounded horizontally, what would be the velocity of the rebounded ball.(elastic collision). this the method i have tried.
momentum of the system along the x-axis is conserved.therefore...
let the two balls pass at t sec
the initial velocity of the ball is =
v^2-u^2=2as
0-u^2=2*-10*100
u=20(5)^1/2
therefore displacement of ball in tsec=
s1=ut+1/2a(t)^2
s1=(20(5)^1/2)t- 1/2g(t)^2......1
the displacemt of other ball in t sec =
s2=1/2g(t)^2.......2
eq 1 +eq 2=100...
A ball is dropped from a 100m cliff. at the same time another ball is thrown up such that it has enough velocity to reach the top. at what distance from top of the cliff will the two balls meet?