Answer
$v=6.0 \times 10^2 cm/s$
Work Step by Step
To find the speed $v$ of the wave, a formula using the speed, wavelength $\lambda$, and frequency must be used. This is $$v=f \lambda$$ Substituting values of $f=25Hz$ and $\lambda=24cm$ yields $$v=(25Hz)(24cm)=6.0 \times 10^2 cm/s$$
