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GR0177 #50
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Problem
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This problem is still being typed. |
Wave Phenomena }Sound
Since the wavelength of the wave does not change, as the pipe presumably stays approximately the same length, only the frequency varies. If the speed of sound changes, then the frequency changes. If the speed of sound is lower than usual, then the frequency is lower. Thus, choices (A), (B) and (C) remain. Calculate to get choice (B).
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Alternate Solutions |
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Comments |
f4hy 2009-11-06 23:27:57 | They give you the 20 degrees as a trick then? |  | michealmas 2006-12-30 11:48:37 | use the equation relating freq., velocity, and wavelength. |  | nahmad 2006-03-30 22:21:27 | One quick way of doing this calculation in your head is to consider it as a 3% loss. Thus -3 for every 100, which gives a loss of -12. 440-12 = 428. |  |
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