Three point charges, Q1, Q2, and Q3, are located in the xy- plane. Q1 is -5.580E-6 C and is located at the origin; Q2 is 4.230E-6 C and is located at the coordinates (0.0,5.0) m; and Q3 is 2.360E-6 C and is located at the coordinates (5.0,0.0) m. Calculate the total electrostatic potential energy.