Write the equation for wave speed in terms of wavelength and frequency.

(N/A) The wave speed $(v)$ is defined as the distance traveled by a wave per unit time.
For a periodic wave,the distance traveled in one time period $(T)$ is equal to one wavelength $(\lambda)$.
Therefore,the wave speed is given by the ratio of wavelength to the time period: $v = \frac{\lambda}{T}$.
Since the frequency $(f)$ is the reciprocal of the time period $(f = \frac{1}{T})$,we can substitute this into the equation.
Thus,the equation for wave speed in terms of wavelength and frequency is: $v = f \lambda$.