Calculate the wavelengths of sounds in 14°C air, for each frequencies of 700Hz and 10,000Hz.

Question

Question

Answer 1

Answer #1

Velocity of sound at temeprature t degree celsius is given by

v=331+0.6t

At temperature 14 degree celsius is

$v=(331+0.6\times14)\ m/s=339.4\ m/s$

Hence, wavelength for frequency 700 Hz is

$\lambda=\frac{Velocity}{Frequency}=\frac{339.4}{700}\ m=0.485\ m$

For 1000 Hz frequency

$\lambda=\frac{Velocity}{Frequency}=\frac{339.4}{10000}\ m=0.0339\ m$

Answer 2

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