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Q. A wheel 55.0 cm in diameter accelerates uniformly from 250 rpm to 385 rpm in 7.0 s. How far will a point on the edge of the wheel have traveled in this time?

Q. A long, straight wire has a 13.7 A current flowing in the positive x-direction. Close to the wire is a square loop of copper wire that carries a 2.17 A current in the direction shown. The near side of the loop is d = 46.3 cm away from the wire. The length of each side of the square is a = 1.13 m. Find the net force between the two current-carrying objects.

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