Willard

Simplify: (Sin^2x)/(Sec^2x-1)

2. Find the charge in potential energy of the system of two charges plus a third charge q3= 3.00µC as the latter charge moves from the infinity to point P.

4. A charge q1 =2.00µC is located at the origin and a charge q2=-6.00µC is located at (0, 3.00) m. 1. Find the total electric potential due to these charges at point P, whose coordinates are (4.00, 0) m.