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A point charge Q = + 87.1 μC is held fixed at the origin. A second point charge, with mass m = 0.0576 kg and charge q = -2.87 μC, is placed at a location 0.323m,

(a) What is the potential energy of the system?

(b) If the second charge is released from rest, what is its speed when it reaches the point (0.121, 0).

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