Answers are:-1.12*10^-1 J-2.25 *10^-1 J1.12* *10^-3 m1.12* *10^-1 JI don't know how to find them:((

8. Consider a charge q = -5 x 10"C having a mass of 1.0x10" kg, in the vicinity of a point charge of Q = 2.5 x 10C. If the potential energy of q is considered to be zero when it is very far away from Q, then determine its potential energy at: a. point A: 10 mm from Q b. point B: 5.0 mm from Q c. At what distance would its potential energy be -1.0 J ? d. How much work would be done by the electric field when it moves from A to B