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OpenStudy (anonymous):
Just one last question for today 5. A steel wire whose diameter 2.0 mm and is under a tension of 50 N is set to vibrate at a frequency of 20 Hz. What is the power required to vibrate this wire to an amplitude of 2 cm if the density of steel is 7.8x103 kg/m3 (assuming the wave is not reflected back)
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