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A cooling fan is turned off when it is running at 850rev/min it turns 1350 revolutions before it comes to a stop. What was the

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A cooling fan is turned off when it is running at 850rev/min it turns 1350 revolutions before it comes to a stop. What was the fan's angular acceleration, assumed constant? Express your answer with the appropriate units. Part B How long did it take the fan to come to a complete stop? Express your answer with the appropriate units

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