1. If a wind instrument, such as a tuba, has a fundamental frequency of 30.1 Hz, what is its first overtone? It is closed at one end and the speed of sound is 334 m/s.
2. Find the length of an organ pipe closed at one end that produces a first overtone frequency of 276 Hz when air temperature is 21.3ºC .
3. A “showy” custom-built car has two brass horns that are supposed to produce the same frequency but actually emit 266.7 and 260.3 Hz. What beat frequency is produced?
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1. 90.3 Hz.
2. Ans L= 0.933 m.
The beat frequency is the absolute value of the difference of the two frequencies -
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