Question

The velocity of sound is 20m /s. If the 30 waves reach the shore in 2 minutes. Calculate the wavelength

Answer 1

Answer:

Wavelength of wave is 80 m

Explanation:

Velocity of sound $c=20 m/s$

frequency=Number of oscillations/ times

f=30/120=0.25 hz

Wavelength is

$\lambda=\frac{c}{f} \\\\\lambda=\frac{20}{0.25}\\\\\lambda=80 m$

Wavelength of wave is 80 m