Waves are disturbances that transport energy without transporting mass. Learn the mechanism underlying sound, deep ocean swells, light, and even the levitation of objects in mid air.

**Details and assumptions**

- The speed of sound is \(340~\mbox{m/s}\).
- The trumpet players aren't moving very fast.

**Assumptions and Details**

- The gravitational acceleration is \(g=9.80\text{ m/s}^2.\)

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