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- Sound terms
- What are common usage terms for `amplitude', `frequency', and `waveform'?
- How is a wave attenuated?
- What is the velocity of sound waves in room-temperature air?
- Sound can be reflected (echo).
- Sound waves can be refracted due to different air temperatures.
- Mechanism of sound travel
- Sound waves travel due to the collision of molecules in the air
- Can sound travel through a vacuum?
- Can sound travel through water? through solids?
- Standing Waves in Tubes
- An open-open pipe has standing waves of 2L = n
 ,
where n = 1, 2, 3, . . .
- An open-closed pipe has standing waves of 4L = m ,
where m = 1, 3, 5, . . .
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