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A dentist using a dental drill brings it from rest to maximum operating speed of 377,000 rpm in 2.8 s. Assume that the drill

A dentist using a dental drill brings it from rest to maximum operating speed of 377,000 rpm in 2.8 s. Assume that the drill accelerates at a constant rate during this time. (a) What is the angular acceleration of the drill in rev/s? rev/s (b) Find the number of revolutions the drill bit makes during the 2.8 s time interval. rev

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