Answer:
The wavelength, of a sound wave with a frequency of 20 waves per second is 15,000,000 m.
Step-by-step explanation:
In this question, we have to calculate the wavelength of a sound wave of frequency 20 waves per second.
We know that the speed of light in air/ vacuum is [tex]3\times 10^{8}[/tex].
Now by the formula v = nλ , where v = speed of light in air/vacuum, n = frequency of the wave and λ = wavelength in meters,
we put the values
[tex]3\times 10^{8}[/tex] = 20 × λ
λ = [tex]\frac{3\times 10^{8}}{20}[/tex]
λ = 15,000,000 m
