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Alekssandra [29.7K]
3 years ago
6

The faintest sound an ear can hear (20 micro-pascals) is roughly ______ times smaller than atmospheric pressure at sea level.

Physics
1 answer:
gtnhenbr [62]3 years ago
6 0

Answer: 5.06\times10^{9}

At sea level, there is one standard atmospheric pressure which is equal to 101.325 kilopascals.

The pressure of faintest sound that a human ear can hear is 20 micro-pascals.

taking the ratio of two:

\frac {101.325 kilopascals. }{20 micropascals} = \frac {101.325 \times 10^{3}Pa}{20 \times 10^{-6}Pa}

=5.06\times10^{9}

Hence, the atmospheric pressure at sea level is 5.06\times10^{9} times greater than the faintest sound that a human ear can hear.



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