Question

Determine the electric potential energy for the array
of three charges in the drawing, relative to its value when the charges are
infinitely far away and infinitely far apart.

The drawing is a right triangle. The left side's length is 3.00m, the bottom side's length is 4.00m, and the hypotenuse's length is 5.00m. The top-left vertex is +8.00 microcoulombs, the bottom-left vertex is -15.0 microcoulombs, and the vertex on the right is +20.0 microcoulombs.