Recent content by NeonJay

Homework Statement Airplanes and trains move through the Earth's magnetic field at rather high speeds, so it is reasonable to wonder whether this field can have a substantial effect on them. We shall use a typical value of 0.50 G for the Earth's field. A) The French TGV train and...

I think I get it. I was essentially neglecting part of my equation. Thanks for the help! It really clears a lot of things up.

Homework Statement Positive electric charge Q is distributed uniformly throughout the volume of an insulating sphere with radius R. From the expression for E=kQ/r^2 for r>R and E=kQr/R^3 for r<R, find the expression for the electric potential V as a function of r both inside and outside the...