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A charge of -2 micro-coulombs is placed at the origin, a charge of +3 micro-coulombs is...

A charge of -2 micro-coulombs is placed at the origin, a charge of +3 micro-coulombs is placed at x = - 52 cm, y = 0 m, and a charge of -6 micro-coulombs is placed at x = 0, y = +13 cm. A fourth charge of -10 micro-coulombs moves from x = +14 cm, y = 0 m to x = -21 cm, 0 m. What is the change in electric potential energy, in Joules, of the fourth charge as it moves from the initial to the final point?

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Answer #1

Concept: find the potential at initial and final point due to all the three charges and use that to find the potential energy difference

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