A charge moves a distance of 2.8 cm in the direction of a uniform electric field havinga magnitude of 249 N/C. The electrical potential energy of the charge decreases by 84.9590 × 10-19 J as it moves. Find the magnitude of the charge on themoving particle. (Hint: The electrical poten- tial energy depends on the distance moved in the direction of the field.) Answer in units of C.