Answer Happy

The figure below shows three positively charged particles at three corners of a rectangle. The particle at upper left has a charge a, left has a charge of qy 5.00 nC, and the one at lower right has a charge a, 4.00 nC. The rectangle's horizontal side has length x has length y 3.50 cm. G (a) What is the electric potential (in V) at the upper-right corner of the rectangle? (Assume the zero of electric potential is at infinity.) V (b) What would be the potential (in V) at the upper-right corner if the charge a, at lower left was -5.00 nC instead? IV 6.00 nC, the one at the lower 5.50 cm and its vertical side