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

question 31

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* 10-2
• B)1.6 *10-2
• C)2.7 * 10-2
• D)4.2 * 10-2
• E)2.0 *10-2