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Unformatted text preview: o ( ) ( ) t kx P t x P − ∆ = ∆ cos , max o max P ∆ is pressure amplitude o pressure oscillations cause oscillating force on eardrum • Connection: max max s v P ρ = ∆ o is density of medium o v is wave speed ( v s ound =331 m/s + (0.6 m/s·°C)x T ) o max s is maximum LONGITUDINAL speed of element in medium • Careful: s vs x and ∆ P vs x represent longitudinal disturbance o No transverse character to sound wave...
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- Winter '12
- Fundamental physics concepts, displacement amplitude