Homework Help: Physics

Posted by unknown on Thursday, January 31, 2013 at 4:56pm.

All I need is the formula for this. Can't remember it or what it's called, then I can solve it, thank you!

The second harmonic of a guitar string has a frequency of 120 Hz. What is the length of the guitar string if the speed of the waves on the string is 110 m/s?

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