(Solved): Three point charges are arranged in a triangle as shown in the figure. - Point charge \( Q_{1} \) h ...

Three point charges are arranged in a triangle as shown in the figure. - Point charge \( Q_{1} \) has a charge of \( 4.56 \mathrm{nC} \). - Point charge \( Q_{2} \) has a charge of \( 6.32 \mathrm{nC} \). - Point charge \( Q_{3} \) has a charge of \( 1.65 \mathrm{nC} \). - Point charges \( Q_{1} \) and \( Q_{2} \) are separated by a distance \( D_{12} \) of \( 0.146 \mathrm{~m} \). - Point charges \( Q_{2} \) and \( Q_{3} \) are separated by a distance \( D_{23} \) of \( 0.625 \mathrm{~m} \). - Point charges \( Q_{1} \) and \( Q_{3} \) are separated by a distance \( D_{13} \) of \( 0.598 \mathrm{~m} \). What is the electrostatic potential energy \( U_{\text {tot }} \) of this configuration of charges? Assume that zero potential energy corresponds to all the charges being infinitely far apart. \( U_{\text {tot }}= \)