The myth of the Flood of Noah, found in Genesis 6-9, presents many hypothetical physics problems. Here is one I have never heard anyone consider:
The flood of Noah drowned the entire earth, and covered all the dry land. Let’s assume this means it rained at least 9000 meters in order to cover Mount Everest. The atmospheric pressure at sea level before the flood matched our currect sea level, call it a pressure of 1 atmosphere. Noah carried a brand new Vaisala weather station on board the ark. When it finally stopped raining, Noah checked his atmospheric pressure.
What did the gauge read?
And as I used to explain to my old students, explain your reasoning and show all your work.