Somebody please check my charts?
Scuba divers must learn about pressure under water. At the water’s surface,
air exerts 1 atmosphere (atm) of pressure. Under water, the pressure increases.
h e pressure P (atm) varies with depth d (ft) according to the equation P=(d/33)+1.
Boyle’s law states that the volume V of air varies inversely with the pressure P.
If you hold your breath, the volume of air in your lungs increases as you ascend.
If you have 4 qt of air in your lungs at a depth of 66 ft (P= 3 atm), the
air will expand to 6 qt when you reach 33 ft, where P = 2 atm.

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Depth Volume of Air in Lungs
0 ft 12 qt
33 ft 6 qt
66 ft 4 qt

Pressure Volume of Air in Lungs
1 atm 12 qt
2 atm 6 qt
3 atm 4 qt

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