Chapter 18, Problem 57GP

57 * Four charged particles A, B, C, and D are placed in an electric field as shown in Figure P18.57. Vertical lines indicate equipotential surfaces of the V field All particles are initially at rest When they are released, they all start moving to the left. (a) Determine the signs of the charges on the particles Rank (b) the kinetic energies of the particles and (c) the speeds of the particles as they cross the -600-V equipotential line. Relative masses and charges of the particles are indicated in the figure. Assume the particles are far from each other so they do not interact, and ignore forces exerted by Earth on the particles.