📐 Speed of Sound Formulas
Air: c = 331.4 + 0.6T (T in °C)
Liquid: c = √(K/ρ)
Solid: c = √(E/ρ)
Mach Number = v/c
c = speed of sound, T = temperature, K = bulk modulus, ρ = density, E = Young's modulus
Speed of Sound:
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Wavelength (1 kHz):
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Time for 1 km:
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Classification:
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💡 Tips & Information
- Speed increases with temperature in gases
- Sound travels faster in denser materials
- Mach 1 = speed of sound in that medium
- Supersonic: Mach > 1, Subsonic: Mach < 1
- Used in ultrasound, sonar, and acoustic design