Sound!!!. Sound is a longitudinal wave. Longitudinal waves are made up of areas where the wave is compressed together, and other areas where it is expanded. Think about it: How do we make sound? How do we hear sound?.
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v = 331.5m/s + 0.6T
v = 331.5m/s + 0.6(-5)
v = 331.5m/s + -3m/s
v = 328.5 m/s
Most concerts you go to will have sound levels between 100 – 130 dB… easily into the permanent damage range.