In the diagram to the right, q = 1.5 μC, Q = 2.0 μC, r = 0.20 m, and the mass of the particle with charge Q is M = 5.0 g. a. Add to the diagram a useful coordinate system and forces acting on the charge Q. b. Find the magnitude and direction of the total electrostatic force on Q. c. Assuming only the electrostatic force is acting, what is the acceleration (magnitude and direction) of the charge Q?