A charge of \( 70 \mathrm{~A} \cdot \mathrm{h} \) (ampere-hours) moves through a potential diffe...

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A charge of \( 70 \mathrm{~A} \cdot \mathrm{h} \) (ampere-hours) moves through a potential difference of \( 25 \mathrm{~V} \). What are (a) the charge in coulombs and (b) the magnitude of the change in the potential energy of the charge?
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