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A point charge qı = +2.40 C is held stationary at the origin. A second point charge q2 = -4.30 uC moves from the point x = 0.Part A What is the change in potential energy of the pair of charges? Express your answer with the appropriate units. TH MÅ ?Part B How much work is done by the electric force on 22? Express your answer with the appropriate units. 1 MÅ ? W= Value J

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