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What are fundamental frequencys?

An organ pipe is 78.0 cm long. What are the fundamental and first three audible overtones if the pipe is a) closed at one end and b) open at both ends?

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Answer #1

Helping people with specific homework questions is against our terms of use. However, we can point you in the right direction.

Consider:

What is the speed of sound in air at room termperature?

How can you calculate the frequency of sound with a certain wavelength?

How does a pipe being open or closed change the wavelength it resonates at?

How does a pipe being open or closed change which harmonics occur as overtones?

Answer these 4 questions and you should be able to solve your homework question.

Note that the 4th question answers the question of why a clarinet sounds so different from a flute. One being effectively an open pipe and the other closed.

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