Physics, 19.11.2019 19:31, hsjsjsjdjjd

Unlike a phonograph record that has a constant angular speed, a cd scans information at a constant linear?
r speed (130 cm/s).
does the cd rotate at a constant or varying
angular speed?
1. varying angular speed.
2. constant angular speed.

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Unlike a phonograph record that has a constant angular speed, a cd scans information at a constant l...