Question

What is its wavelength if a wave has a speed of 45 meters per second and a frequency of 75Hz?

Answer 1

The wavelength is 60 cm.

This question is like the one at

http://socratic.org/questions/if-a-sound-wave-in-the-air-has-a-frequency-of-256-hertz-and-is-traveling-at-a-sp

In your problem, `v` = 45 m/s and `f` = 75 Hz, so

`λ = v/f` = `(45"m·s⁻¹")/(75"s⁻¹")` = 0.60 m = 60 cm