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Q. A student of weight 673 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force N on the student from the seat is 566 N. (a) What is the magnitude of N at the lowest point? If the wheel's speed is doubled, what is the magnitude FN at the (b) highest and (c) lowest point?

Q. The positive charges are arranged in a square. sides- .10 m the top right is 9 nC the bottom right is 3 nC and the bottom left is 1 nC. find the magnitude of the electric field at the fourth corner of the square.

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