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Q. One of the children on the merry-go-round is not holding on tight enough. If the radius of the merry-go-round is 1.3m, and the child falls off the edge at maximum angular velocity of 11rad/s, what is his new linear (tangential) velocity?

Q. Two large metal plates of area 1.2 m2 face each other. They are 4.8 cm apart and have equal but opposite charges on their inner surfaces. The strength of the electric field between them is 63 N/C.what is the magnitude of the charge on each plate?

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