A point charge q1 = 2.40 uC is held stationary at the origin. A second point charge q2 = -4.30uC moves from the point x= .150 m, y= 0.0 m, to the point x = .250 m, y= 0.0m a) what is the charge in potential energy of the pair of charges?
b) How much work is done by the electric force on q2