What is the shortest distance d you need to walk forward to be at a point where you cannot hear the speakers? the forward direct
2 answers:
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Answer:
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:
Hence, the atmospheric pressure at sea level is times greater than the faintest sound that a human ear can hear.