Workin on some physics hw for the past couple hours and my brain is ready to take a sh.it.....
A nonconductor has an internal electric field that varies radially
E = 5.2 * (V/m^4) * r^3 * (r_vector)
a) Find the E force on an electron at r = .25m
b) Find the change in C from r = 0 to r = .24
c) The electron is released from rest at r = .25m, Find the speed of the electron at r = 0