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Montano1993 [528]
3 years ago
14

HELP ME ASAP PLZZ

Physics
1 answer:
Mazyrski [523]3 years ago
4 0

Answer:

A atmospheric composition

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A small boat is moving at a velocity of 1.93 m/s when it is accelerated by a river current perpendicular to the initial directio
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16.405m/s

Explanation:

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The sound from a trumpet radiates uniformly in all directions in 20C air. At a distance of 5.00 m from the trumpet the sound int
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Answer:

The answer is below

Explanation:

The intensity level (B) of a sound wave is given by:

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Substituting gives:

52=10log(\frac{I}{10^{-12}} )\\\\log(\frac{I}{10^{-12}} )=5.2\\\\I=1.58*10^{-7}\ W/m^2

The pressure is given by:

I=\frac{p_{max}^2}{2\rho v} \\\\\rho=air\ density=1.2\ kg/m^3,v=speed\ of\ sound\ in\ air=344\ m/s,p_{max}=pressure:\\\\p_{max}=\sqrt{2\rho vI}=\sqrt{2*1.58*10^{-7}*1.2*344}  =1.14*10^{-2}Pa

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