Question

What is the speed of a periodic wave with a frequency of 4.5 Hz and a wavelength of 0.9m?

Answer 1

4.05 m/s

Step-by-step explanation:

Frequency f and wavelength lambda are related to each other through the propagation speed v as shown below. That allows us to caclulate the speed when f and lambda are known:

`f = (v)/(\lambda)\implies v = f\lambda=4.5(1)/(s)0.9m=4.05(m)/(s)`

The speed of the wave is 4.05 m/s.