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Q. When two point charges are a distance apart, their potential energy is -4.00 .How far (in terms of ) should they be from each other so that their potential energy is -8.00 ?

Q. A wheel 65.0 cm in diameter accelerates uniformly from 230 rpm to 355 rpm in 7.0 s. How far will a point on the edge of the wheel have traveled in this time?

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