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2015-03-04T00:46:46+05:30

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F = 850 Hz
v = 340 m/s

\lambda= \frac{v}{f} = \frac{340}{850} =0.4m

The distance between crest and trough is half of the wavelength. thus that will be 0.4/2 = 0.2m.

Period of vibration =  \frac{1}{f} =  \frac{1}{850} = 0.00118s
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