ch16-p080 - 80. (a) Since the string has four loops its...

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80. (a) Since the string has four loops its length must be two wavelengths. That is, λ = L /2, where λ is the wavelength and L is the length of the string. The wavelength is related to the frequency f and wave speed v by λ = v / f , so L /2 = v / f and L = 2 v/f = 2(400 m/s)/(600 Hz) = 1.3 m. (b) We write the expression for the string displacement in the form y = y m sin( kx ) cos( ω t ), where y m is the maximum displacement,
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This note was uploaded on 04/16/2011 for the course PHYSICS 191262 taught by Professor Najafzadeh during the Spring '09 term at The Petroleum Institute.

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