# Physics: Fluids & Solids

Discussion in 'MCAT Study Question Q&A' started by basketballakev, Jan 4, 2009.

1. ### basketballakev Membership Revoked Removed 7+ Year Member

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Can someone help me with this problem mathematically. The answer is choice C.

A swimmer is at the bottom of a 5-meter pool, where the gauge pressure (pgh) is approximately 0.5Patm. If the swimmer rises to the surface, by how much does the total pressure change?

A. The total pressure increases by 33%.
B. The total pressure increases by 66%.
C. The total pressure decreases by 33%.
D. The total pressure decreases by 66%.

Thanks a lot everyone!

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3. ### swamprat PhysicianClassifieds Approved 10+ Year Member

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Well I always thought as a rule of thumb for every 10 meters pressure increases by 1 atm. So if total pressure is 1.5 atm (atmospheric plus gauge) then u lose .5 and total pressure is 1 atm so you lose 1/3 or 33%

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