show me how to figure this out. I'm at a loss. Thank you. Charge q1 = 4 nC is located at the coordinate system origin, while charge q2 = 4.5 nC is located at (a, 0), where a = 2.2 m. The point P has coordinates (a, b), where b = 0.95m. A third charge q3 = 16.3 nC will be placed later. a) Please show me how to find the electric potential at point P, in volts, assuming the potential is zero at infinity. b) How doI calculate the work W, in joules, you would have to do to bring the third charge, q3, from very far away to the point P? c) How do I find the total potential energy U, in joules, of the final configuration of three charges