Recent content by jm21

For the first problem I tried to first find E (the electric field) by using the formula E =Q/2εo(pi)(r^2). I got E to be 1.14 x 10^-11. Then I plugged E into the formula E = sigma/2εo where sigma is the surface density. This turned out to be 2.01 x 10^-22. However, that answer was not right...

I have two problems that I need help working on. The first one is An electron is released from rest 2.0 cm from an infinite charged plane. It accelerates toward the plane and collides with a speed of 1.0 x 10^7 m/s. What is the surface charge density of the plane? The second problem is: A...