Question

What is the frequency of a sound wave having a velocity of 341 meters/second and a wavelength of 0.8 meters? 426 hertz 400 hertz 800 hertz 210 hertz

Answer 1

`"426 Hz"`

Explanation:

Velocity (`"v"`), Frequency (`f`) and wavelength (`λ`) are related as

`"v" = f λ`

From above

`f = "v"/λ"`

`color(white)(f) = "341 m/s"/"0.8 m"`

`color(white)(f) = 426.25\ "Hz" ≈ "426 Hz (in 3 sig. fig)"`