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Physics, 11.12.2019 23:31, cadeduncan71
Electric toothbrushes can be effective in removing dental plaque. one model consists of a head 1.1 cm in diameter that rotates back and forth through a 70 angle 7600 times per minute. what is the average angular speed in each direction of the rotating head?
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Electric toothbrushes can be effective in removing dental plaque. one model consists of a head 1.1 c...
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