A point charge q1 = +2.40 μC is held stationary at the origin. A second point charge q2 = -4.30 μC moves from the point x = 0.140 m, y = 0, to the point x = 0.255 m, y = 0.255 m.
a.) What is the change in the potential energy of the pair of charges? Express your answer with the appropriate units.
b.) How much work is done by the electric force on q2q2? Express your answer with the appropriate units.
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