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Waves and Sound: Frequency of harmonic waves with crests that are 2.5 m apart

Harmonic waves are sent along a rope at a speed of 20m/s. What is the frequency of the wave if successive wave crests are 2.5 m apart?

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I assumed that crests mean "positive maximum amplitude" of the wave.

Let d be the wave-length and u is the speed of the wave.

Think abou this this way.
If you look at the ...

Solution Summary

The solution provides good explanations using in solving the problem. The frequency of the harmonic waves with crests are determined.