Need help on potential and charge

1. Feb 4, 2007

feelau

1. The problem statement, all variables and given/known data
This should be really easy, but I can't think right now so....We have a maximum potential of 580 kV. Now we need to first solve for charge of the spherical conductor and second, find the radius( Easy to solve once we know charge)

2. Relevant equations
V=kq/r
V=E*integral dr
many others

3. The attempt at a solution
I've been trying to find a way to cancel out radius and solve for q but I can't seem to do it. Someone plz help I need to turn this in by tomorrow morning thanks.

EDIT never mind

Last edited: Feb 4, 2007