Answer:
[tex]v=3200m/s[/tex]
Explanation:
The velocity (speed) of a sound wave (any wave in fact) is related to its frequency and wavelength by the equation [tex]v=\lambda f[/tex]. This is easy to remember since it's a distance divided by a time because frequency is the inverse of the period.
Since for sound traveling through the given solid object we have that [tex]f=400Hz[/tex] and [tex]\lambda=8m[/tex], the speed of sound will be:
[tex]v=\lambda f=(8m)(400Hz)=3200m/s[/tex]
