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3 years ago

The frequency of the faintest audible sound is about 1,000Hz. What is the pressure variation corresponding to this sound.

Physics

1 answer:

astra-53 [7]3 years ago

3 0

Answer:

Option B

$3\times 10^{-5}$

Explanation:

Variation of pressure, $\triangle P$ is given by

$\triangle P=\sqrt {2\rho vi}$

Where v is the speed of sound, i is the intensity, rho is the density of air whose value is taken as 1.2 Kg/m3

Taking the speed of sound in air as 334 m/s then

$\triangle P=\sqrt{2\times 1.2\times 334\times 1\times 10^{-12}}=2.831\times 10^{-5}\approx 3\times 10^{-5}$

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Answer:

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3 years ago

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Licemer1 [7]

Answer:

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3 years ago

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MissTica

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