# A 100-Hz sound wave has a wavelength of 4 meters. What is the speed ?

A 100-Hz sound wave has a wavelength of 4 meters. What is the speed ?
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Lorenzo Acosta
Speed (v) wavelength ($\lambda$) and frequency (f) are related as
$v=f\lambda$
$v=100Hz×4m=400m/s$
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hommequidort0h
Speed and wavelength are related through the following equation,
$v=f\lambda$
f is the frequency of the wave in hertz
$\lambda$ is the wavelength in meters
Note that: $1Hz=1{s}^{-1}$
So here, we got:
v=100 Hz*4m
=400Hz M
$=400m{s}^{-1}$
=400m/s