10. Consider three charges. There is a 5.5 nC charge at coordinates (5.8 m, 0).There is a 6.7 nC charge at coordinates (0, 6.4 m). Lastly, there is a -7.7

nC charge at coordinates (5.8 m, 6.4 m). Calculate the electric potential at the origin, in V. Use k = 9 x 109 N m2 / C2.