Recent content by username2

erm. outside is conducting so I don't believe it has any electrical field on the inside, please correct me if I'm wrong..but uh, just do the flux = E(2pi*r*l), and then use gauss', treating it as a line of charge (lambda*l)/epsilonknot do a bit of algebra, treating the center of the inner...

you just answered your own question. there is also less room for particles to lose potential over.

Think of this problem as a falling loop, there is no friction, so just treat the loop as if it has rolled down and had its center of mass accelerated at 9.8m/s^2 down a wall height h. now simply use the equations for potential and kinetic energy and you're done.

A Uniform pool ball mass 'm' and raidus 'r' begins at rest. It is given horizontal impulse J of fixed magnitude at a distance br above its center where -1<=B<=1. Coefficient of kinetic friction between ball and table is u. Assume both ball and table are rigid. Find an expression for the final...