(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

"At the surface of a freshwater lake the air pressure is 1.1 atm. At what depth under water in the lake is the water pressure 4.5 atm?"

2. Relevant equations

I used the equation P_{gauge}= Dgh

3. The attempt at a solution

I converted my atm to Pascals--> (4.5)(100000) = 450000 Pa

P_{guage}= Dgh

P_{guage}= (1000)(9.8)(h)

-I used 1000, the density of water, but I'm not sure that is the right info to use for D!

Then I solved for h.

h = 450000/ (10000x9.8)

h = 45.92

I got it incorrect though. Can anyone offer any insight? Thanks!

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# Homework Help: Air Pressure and Water Pressure

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