A centrifuge in a biology lab spins at 4000 rpm. The lab student turns the centrifuge off and it slows to a stop in 7.00

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answerhappygod
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A centrifuge in a biology lab spins at 4000 rpm. The lab student turns the centrifuge off and it slows to a stop in 7.00

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A centrifuge in a biology lab spins at 4000 rpm. The lab student
turns the centrifuge off and it slows to a stop in 7.00 seconds.
What is the angular acceleration (a) of the centrifuge in units of
rad/s2 ? [Pay attention to UNITS and +/- signs!]
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