A cord is 20cm long, four complete waves fit along its length when vibrated 30 times per second for the waves on the cord. What is the wavelength? What is the frequency? What is the speed?
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Wave length: If four complete waves fit in 20 centimeters, each wave has a length of 5 centimeters.
I must confess the terminology is misleading. There is a single wave in a string, what we say is that ...
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