Question

What is the frequency of a sound wave with a wavelength of 0.04 meter in air? What type of wave is this, transverse or longitudinal

Answer 1

`"8500 Hz"` and longitudinal

Explanation:

Speed (`"v"`), frequency (`f`) and wavelength (`λ`) are related as

`"v"= f λ`

Speed of sound at `"20°C"` is approximately `"340 m/s"`

`f = "v"/λ = "340 m/s"/"0.04 m" = "8500 Hz"`

Sound wave is longitudinal.