Calculate the Pressure Amplitude (In N/m²)of a 500 Hz Sound $\rho$

question 29

Multiple Choice

Calculate the pressure amplitude (in N/m²) of a 500 Hz sound wave in helium if the displacement amplitude is equal to 5.0 *10 ^{- 8} m.( $\rho$ = 0.179 kg/m³,v = 972 m/s. )

• A)3.5 *10 1^{- 2}
• B)1.6 *10 ^{- 2}
• C)2.7 *10 ^{- 2}
• D)4.2 *10 ^{- 2}
• E)2.0 *10 ^{- 2}

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