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Two point charges totaling 9.50 μC exert a repulsive force of 0.160 N on one another...

Two point charges totaling 9.50 μC exert a repulsive force of 0.160 N on one another when separated by 0.420 m. a) What is the charge on each? Assume that the two charges are negative. b)What is the charge on each if the force is attractive?

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