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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 0.97 \times 440 to get choice (B).

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Comments
f4hy
2009-11-06 23:27:57
They give you the 20 degrees as a trick then?NEC
michealmas
2006-12-30 11:48:37
use the \nu = \frac{v}{\lambda} equation relating freq., velocity, and wavelength.NEC
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.NEC

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