OpenStax, Algebra and Trigonometry 2e §7.1 Angles · Exercise 63 · Trigonometry · Angle measure
Angles · Exercise 63
When being burned in a writable CD-R drive, the angular speed of a CD is often much faster than when playing audio, but the angular speed still varies to keep the linear speed constant where the disc is being written. When writing along the outer edge of the disc, the angular speed of one drive is about 4800 RPM (revolutions per minute). Find the linear speed if the CD has diameter of 120 millimeters.
OpenStax, Algebra and Trigonometry 2e · §7.1 Angles · Exercise 63
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