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A metal disc has 50 evenly spaced holes close to its rim. when it is...

A metal disc has 50 evenly spaced holes close to its rim. when it is rotated and an air jet plays on the holes, a note is heard. Explain this and calculate the speed of rotation which produces a note of frequency 250 hz. calculate the frequency of the note produced when a disc of 60 holes is rotated at the same rate.?
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Asked by Martin edu on 3rd June, 2020
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