What Is the Amplitude of a Gas Element, at 20°C

question 24

Multiple Choice

What is the amplitude of a gas element, at 20°C, when a sound wave of frequency 4 kHz propagates, and the pressure variation is 28 ìP, at the threshold of human hearing?

• A)2.7 × 10^-12 m
• B)1.7 × 10^-11 m
• C)1.7 × 10^-9 m
• D)2.7 × 10^-3 m

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