Answer:
Period of this wave, T = 0.142 seconds.
Explanation:
The frequency of the sound wave, f = 7 Hz
We need to find the period of this wave. The time period of the wave is given by :
[tex]T=\dfrac{1}{f}[/tex]
[tex]T=\dfrac{1}{7\ Hz}[/tex]
T = 0.142 seconds
So, the period of this wave is 0.142 seconds. Hence, this is the required solution.