Physics · Waves and Sound
Sound waves in air are classified as longitudinal waves because:
- 1The particles of the medium vibrate perpendicular to the direction of wave propagation
- 2The air molecules do not vibrate at all
- 3The particles of the medium vibrate back and forth along the direction of wave propagation✓
- 4The particles of the medium move randomly in all directions
Correct answer
The particles of the medium vibrate back and forth along the direction of wave propagation
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