Calculate the Displacement Amplitude (In M)of a 20 KHz Sound $\rho$

question 23

Multiple Choice

Calculate the displacement amplitude (in m) of a 20 kHz sound wave in helium if it has a pressure amplitude of 8.0 *10 ^{- 3} N/m².( $\rho$ = 0.179 kg/m³,v = 972 m/s. )

• A)2.9 *10 ^{- 10}
• B)3.7 *10 ^{- 10}
• C)7.8 * 10 ^{- 9}
• D)2.4 *10 ^{- 9}
• E)1.9*10 ^{- 10}

Understand the basics of neural activity and how it influences behavior and mental processes.

Explain the concept of reflex actions and their significance in the nervous system.

Grasp the significance of neural consumption of oxygen and its impact on physiological functions.

Understand the concept and calculation of the Net Present Value (NPV) and its importance in investment decisions.

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