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The drill used by most dentists today is powered by a small air-turbine that can operate at angular speeds of 361000 rpm. These drills, along with ultrasonic dental drills, are the fastest turbines in the world - far exceeding the angular speeds of jet engines. Suppose a drill starts at rest and comes up to operating speed in 2.16 s. Calculate the angular acceleration produced by the drill, assuming it to be constant. Give answer in rev/s.

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