Answer:
v=700 m/s
Explanation:
Given that,
The frequency of a wave is 35 Hz and its wavelength is 20 m
We need to find the speed of the wave. Let it is v. It is given in terms of frequency and wavelength as follows :
[tex]v=f\lambda\\\\v=35\times 20\\\\v=700\ m/s[/tex]
So, the velocity of the wave is 700 m/s.