Recent content by duke91

Well, for that, since it is from infinity..it isf rom infinity to what? when r is equal to infinity the entire thing goes to 0..but the answer is not zero, I have tried it already, what do I use for the 2nd r?

That is where i am stuck... i pretty much get V=q/4pi*epsilon_0r..and then no other clue...

The formulaI know regarding electric potential is: Va-Vb= integral(E* dl)

An insulating spherical shell with inner radius 25.0 \rm cm and outer radius 60.0 \rm cm carries a charge of + 150.0 \mu {\rm C} uniformly distributed over its outer surface. Point a is at the center of the shell, point b is on the inner surface and point c is on the outer surface. What will...