Two point charges, Q1 and Q2 [Q one and Q two], that have charges of +10 [plus ten] Nanocoulumbs and -10 [minus ten] Nanocoulombs, respectively, are placed at two vertices of an equilateral triangle. If a third charge, Q3 [Q three], of +5 [plus five] Nanocoulombs is placed at the third vertex, what is the potential energy associated with Q3?