Problem: A charge of +7.80 x 10-4 C is fixed at the origin of a coordinate system. A charge of +8.35 x 10-6 C is placed on a raisin of mass 5.35 g. The raisin is then brought from far away to a point 39.2 cm from the origin.
Part A: What is the electric potential energy of the system?
Please show complete calculation to find the electric potential energy of the system. Thank you!