Two charged particles are located on the x-axis. The particle with charge q1 = 3.60 µC is located at x1 = 1.25 cm and the particle with charge q2 = -2.32 µC is located at x2 = -1.80 cm. (a) Determine the total electric potential (in V) at the origin. V (b) Determine the total electric potential (in V) at the point with coordinates (0, 1.50 cm). V