Question: An object with a charge of +36 µC is placed at the origin. Another object with a charge of +47 µC is placed a distance of +49 cm from the first object along the x axis. A third object with charge -16 µC is moved from the (x, y) location (0, 10) to (17, 10), where the positions are given in cm.
Part A: When the third object is moved this distance, what is the change in the potential energy?
I want you to explain the physics in this question.