Answer: The correct answer is 87..5 m/s.
Explanation:
The expression for the relation between the speed of the wave and the frequency of the wave is as follows;
[tex]v=f\lambda[/tex]
Here, v is the speed of the wave, f is the frequency and [tex]\lambda[/tex] is the wavelength of the wave.
It is given in the problem that a wave has a frequency of 250 Hz and a wavelength of 0.35 m.
Put f=250 Hz and [tex]\lambda[/tex]= 0.35 in the above expression.
[tex]v=(250)(0.35)[/tex]
[tex]v=87.5 m/s[/tex]
Therefore, the wave speed of a wave is 87.5 m/s.
