Answer;
Period = 1/17 seconds
Explanation;
- Wavelength is related to period by the expression:
speed = wavelength / period
- If we are given the speed, then we can easily calculate the period at the wavelength of 20 m.
Given the speed of sound wave as 340 m/s
Period = Wavelength/ speed
= 20 m/340 m/s
= 1/17 seconds
