Question

A plane longitudinal wave with frequency 1000

Answer 1

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I=12a2ω2ρv⇒a2v=2Iρω2=2×10−16
Again
v=γPρ−−−√⇒γP=ρv2
From propagation of longitudinal waves,
(ΔP)max=γPaωv=ρvaω⇒av=(ΔP)maxρω=2×10−7
So,
v=(av)2a2v=200 m/s