A charge q = 1.0 C is placed at the center of a spherical shell made of copper (see figure below). If the shell has a charge Q = 2.0 C, find the charges on the inner and outer surfaces of the spherical shell. If the outer shell radius, r, is 5 cm, what is the electric field at point P, 4 cm away from the center, and P2, 10 cm from the center?