Compute the each part of given problem:
Problem: A piano wire with mass 3.20 g and length 77.0 cm is stretched with a tension of 25.0 N. A wave with frequency 120.0 Hz and amplitude 1.6 mm travels along the wire.
Part I: Calculate the average power carried by the wave.
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Part II: What is the average power if the wave amplitude is halved?
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Please keep answer short and simple and please no copy and paste.