Thursday
September 18, 2014

Homework Help: Physics - Submerged Cylinder

Posted by Phil on Wednesday, January 7, 2009 at 9:40pm.

A cylindrical diving bell 5 m in diameter and 10 m tall with an open bottom is submerged to a depth of 150 m in the ocean. The temperature of the air at the surface is 20 degrees Celsius, and the air temp 150 m down is 2 degrees Celsius. The density of seawater is 1025 kg/m^3. How high does the sea water rise in the bell when the bell is submerged?

STEPS:
(1) Find volume of cylinder
(2) Find volume of air in cylinder when submerged
(3) Vcyl - Vair = Vwater

I think you use the formula P=Po + pgh to find the height of the air pocket, but I'm not sure what values to use for P, Po, and p. Please help.

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