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One end of a very long wire is rigidly fastened to a post. The other end...

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Physics

One end of a very long wire is rigidly fastened to a post. Theother end is attached to an audio speaker which shakes the end ofthe wire in a direction perpendicular to its length. The wire has adiameter 1.1 mm , a volume mass density of 7800kg/m3, and is held under atension of 6.7 N. The speaker creates a wave on the wire with anamplitude 0.56 cm and a frequency of 65.0 Hz .

Part A: Ignoring any reflections of the wave from the post, howmuch power is transferred from the speaker to the wave?

P = _______________W

Part B: If I double the frequency at which the speakeroscillates, while keeping the power output the same, what is thenew amplitude of the wave?   

A = ____________cm

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