Solved: As the drawing illustrates, a siren can be made by
Chapter 16, Problem 16.90(choose chapter or problem)
As the drawing illustrates, a siren can be made by blowing a jet of air through 20 equally spaced holes in a rotating disk. The time it takes for successive holes to move past the air jet is the period of the sound. The siren is to produce a 2200-Hz tone. What must be the angular speed (in rad/s) of the disk?
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