# Help with Physics homework?

If a frequency of 220 Hz generates a standing wave at the 4th harmonic of a string 1.0 meters long, what is the speed of the wave in the string?

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- NCSLv 71 month agoFavourite answer
The 4th harmonic is two complete waves (4 loops), and so the wavelength here is 0.5 m.

speed v = fλ = 220Hz * 0.5m = 110 m/s

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