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Speed of Sound

A sound wave ...

Question

A sound wave travels at speed of 339 $m s^{- 1}$ . If its wavelength is 3 cm, what is the frequency of the wave?

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Solution

Speed $=$ $339 m / s$
Wavelength $= 3 c m$
now change it to meter
A $= 3 / 100$
$= 0.03 m$
$s p e e = w a v e l e n g t h \times f r e q u e n c y$
$= 339 m / s = 0.03 \times f r e q u e n c y$

$f r e q u e n c y = \frac{339 m / s}{0.03 m}$
$= 11300 H z$
It is more than $11300 H z .$ Therefore $,$ it will not be audible to the human ear $.$

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