Question

If a sound wave traveling at a speed of 369 meters per second has a wavelength of 3 meters what is the frequency if the sound wave?

Answer 1

The frequency of the wave is 100 Hz.

This question is like the one at

http://socratic.org/questions/what-is-the-frequency-of-a-wave-with-a-wave-speed-of-50-m-s-and-a-wavelength-of-?source=search

For your problem,

`v` = 339 m/s and `λ` = 3 m, so

`f = v/λ = (339"m·s⁻¹")/(3"m")` = 100 s⁻¹ = 100 Hz

Note: The answer can have only 1 significant figure, because that is all you gave for the wavelength. If you need more precision, you will have to recalculate.