一道英语物理题
By how much does the water pressure exceed atmospheric air pressure:
a.) 1 m below the surface of a pool (of fresh water)?
by Pa
b.) 7 m below the surface?
by Pa
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c.) How far below the surface do you have to go,before the total pressure you feel is triple that of atmospheric pressure at sea level (itself about 100,000 Pa)*?
m
(*Hopefully from this,you'll gain an appreciation for just how much our normal atmospheric pressure is -- and that us human beings really do live "on the bottom of an ocean of air.")