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Halliday 2 Cap 18 - P18 032

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    December 2018
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32. The frequency is f = 686 Hz. At the beginning of the exercises and problems section in the textbook, we are told to assume vsound = 343 m/s unless told otherwise. If L is the length of the air-column (so that the water height is h = 1.00 m − L) then Eq. 18-41 leads to  0.875 m for n = 1    nv 0.625 m for n = 3 =⇒ h = 1.00 − L = . L= 0.375 m for n = 5  4f   0.125 m for n = 7