Question

What is the wavelength of a sound wave moving at 30m/s with a frequency of 256hz

Answer 1

Wavelength, λ, is given by the relation:

$\lambda = \frac{c}{f}$

where c is the wave speed and f is the frequency.  For this wave we get:

 $\lambda = \frac{30m/s}{256s^{-1}}=0.117m$