Question

A sound wave has a wavelength of 5.5 m in its travel through air at S.T.P with speed 330m/s. What is the wavelength of sound in the medium? where its speed is 1324 m/s.

Answer 1

`lamda=22" "2/3m` or `lamda=22.67m`

Explanation:

Sound's frequency stays the same across mediums. To find it's frequency, we can use
`v=lamdaf` Inputting knowns:
`330m/s=5.5m*f` Solve for `f`:
`f=60Hz`

Knowing this, we can find the wavelength `lamda` in the other medium:
`v=lamdaf` Inputting knowns:
`1324m/s=lamda*60Hz` Solve for `lamda`:
`lamda=22" "2/3m` or `lamda=22.67m` in decimal form.