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.
(b) A fourth particle, with a mass of 2.00 x 10-13 kg and a charge of 40.0 nC, is released from rest at the point (3.00 cm, 0). Find its speed after it has moved freely to a very large distance away.

Transcribed Image Text:

20.0 nC 4.00 cm 100 3.00 c40.0 nC 4.00 cmm 20.0 nC