Negatively Negatively charged charged Metal Plastic A solid metal ball of radius 1.3 cm bearing a charge of -15 nC is located near a hollow plastic ball of radius 1.7 cm bearing a uniformly distributed charge of -6 nC (see the figure) on its outer surface. The distance between the centers of the balls is 11 cm. Assume the +x axis runs to the right, the ty axis runs up and the +z axis is out. What is the electric field at the center of the metal ball due only to the charges on the plastic ball? N/C What is the net electric field at the center of the metal ball? Ened = N/C What is the electric field at the center of the metal ball due only to the charges on the surface of the metal ball? Earl =