A periodic wave with wavelength = 1 m has frequency f = 3 Hz.
What is the wave's speed?

3 m/s

Explanation:

The wavespeed of a wave is the distance covered by the wave in one second. It is measured in metre per second, and represented by the symbol V.

Wavespeed (V) = Frequency F x wavelength λ

V = F λ

In this case,

wavelength (λ)= 1 m

Frequency = 3 Hz.

Hence, V = F λ

V = 1m x 3Hz

V = 3 m/s

Thus, the wavespeed is 3m/s