# Physics: Calculate the beat frequency in organ pipes.

Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 479 Hz at 18 C. In one pipe the air temperature is increased to 21 C. If the two pipes are sounded together, what beat frequency results?

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#### Solution Preview

Frequency is given by

f = velocity / wavelength

velocity of sound is dependent on temperature. It is given by

v = 331+0.6T .

Let V1 = ...

#### Solution Summary

The solution defines the problem and works through to the answer.

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