A particle with a charge of q = 14.0 µC travels from the origin to the point (x, y) = (20.0 cm, 50.0 cm) in the presence of a uniform electric field E = 300î V/m. Determine the following:
(a) the change in the electric potential energy (in J) of the object–field system J
(b) the electric potential difference (in V) through which the object moves V