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With what tension must a rope with length 2.80m and mass 0.170kg be stretched for transverse waves of frequency 41.0Hz to have a wavelength of 0.910m ? (N)
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velocity = sqrt(Tension/Linear Density)
Tension = velocity^2 * Linear Density

velocity = frequency * wavelength = (41Hz)(0.910m) = 37.31 m/s

Linear Density = mass / length = 0.170 kg / 2.8 m = 0.061 kg/m

Tension = (37.31 m/s)^2 * (0.061 kg/m) = 84.91 kg m/s^2 = 85 N
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