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A small object with negative charge q = -4.00106 C is released from rest at point A and the object has kinetic energy 8.0010-5 J

A small object with negative charge q = -4.00106 C is released from rest at point A and the object has kinetic energy 8.0010-5 J when it reaches point B. The electric potential at point A is V=140 V. If the electrical force is the only force that does work on the charge, what is the electric potential at point B?

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