Grace is playing with her dolls and decides to give them a, Ask an Expert

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Grace is playing with her dolls and decides to give them a ride on a merry-go-round. She places one of them on an old record player turntable and sets the angular speed at 33.3 rpm.

(a) What is their angular speed in rad/s?

(b) If the doll is13cm from the center of the spinning turntable platform, how fast (in m/s) is the doll moving?

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