ch16-p017 - 17. (a) The amplitude of the wave is ym=0.120...

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17. (a) The amplitude of the wave is y m =0.120 mm. (b) The wave speed is given by v = τμ , where τ is the tension in the string and μ is the linear mass density of the string, so the wavelength is λ = v / f = / f and the angular wave number is () 1 20 . 5 0 k g m 2 2 100Hz 141m . 10N kf π == π = π = λ (c) The frequency is f = 100 Hz, so the angular frequency is ω = 2 π
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