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Physics, 26.11.2019 23:31 Mosoete4219

How much work is done by the motor in a cd player to make a cd spin, starting from rest? the cd has a diameter of 12.0 cm and a mass of 15.8 g. the laser scans at a constant tangential velocity of 1.20 m/s. assume that the music is first detected at a radius of 27.0 mm from the center of the disk. ignore the small circular hole at the cd’s center.

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