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Bernoulli's equation

An airplane flying at high altitude contains 100m^3 of air at STP(273 degrees and 1 atm). If a 1-cm^2 hole suddenly develops in the cabin wall, how long will it take for cabin pressure to drop by half?

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So you need Bernoulli's equation to solve this.
<br>Inside the cabin you are at STP - so you know P1 and the specific gravity of air at STP...
<br>I suggest that you assume p2 is zero (high altitude). That ...

Solution Summary

Bernoulli's equation is applied.