Two particles, with charges of 20.0 nC and -20.0 nC, are placed at the points with coordinates (0, 4.00) cm and (0, -4.00) cm as shown in Figure P25.28. A particle with charge 10.0 nC is located at the origin.
(a) Find the electric potential energy of the configuration of the three fixed charges. (in J) (b) A fourth particle, with a mass of 1.98 x 10-13kg and a charge of 40.0 nC, is released from rest at the point (3.00, 0) cm. Find its speed after it has moved freely to a very large distance away. (in m/s)
