A piano wire with mass 2.90g and length 82.0cm is stretched with a tension of 35

Question

A piano wire with mass 2.90g and length 82.0cm is stretched with a tension of 35.0N . A wave with frequency 100Hz and amplitude 1.90mm travels along the wire. Part A Calculate the average power carried by the wave. Part B What happens to the average power if the wave amplitude is halved? A piano wire with mass 2.90g and length 82.0cm is stretched with a tension of 35.0N . A wave with frequency 100Hz and amplitude 1.90mm travels along the wire. Part A Calculate the average power carried by the wave. Part B What happens to the average power if the wave amplitude is halved? Part A Calculate the average power carried by the wave. Part B What happens to the average power if the wave amplitude is halved? Part B What happens to the average power if the wave amplitude is halved?

Explanation / Answer

transmitted power=0.24915209200000005

P=0.5*u*w^2*A^2*V

if A is halfed power wil be 14th of original

so it wiill be 0.0625W

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