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
Example 2: My wife and I are listening to my favorite David Bowie song, “Major Tom” from the 1980’s. At one point the singer hits a note that my wife thinks has a wavelength of 0.014m. I tell her this is impossible… explain why.
I play the trumbone (yes, I actually can, I’m just not very good anymore!), and tuned it straight out of the case. The temperature of the trombone was 17°C and I tuned it to 13,000 Hz. I start playing the trombone, and by the time I’m a few minutes into the song I notice that the notes all seem wrong. If the trombone has warmed up to my body temperature (37°C) , determine what my original tuned note has changed to. (Note: the wavelength of the wave will not change with a change in temperature.)
Most concerts you go to will have sound levels between 100 – 130 dB… easily into the permanent damage range.