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Two charges are lying on the x axis. The charge at x=-0.15m has a charge of...

Two charges are lying on the x axis. The charge at x=-0.15m has a charge of -12nC. The charge at +0.20m has a charge of +10nC. If a charge of +20nC moves along the y-axis from the origin to y=+0.25m, what is the change in its electrical potential energy?

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