Question

A positive charge of 4.90 μC is fixed in place. From a distance of 3.20 cm a from the fixed positive charge, a particle of mass 5.00 g and charge +3.20 μC is released from rest. What is the speed of the +3.20 μC when it is 7.50 cm away from the fixed positive charge?

I keep getting 1.005 m/s but can't figure out what I'm doing wrong!
Unknown

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