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December 6, 2016

Homework Help: physics

Posted by Jessi on Sunday, August 23, 2009 at 10:35am.

A cylinder that has a 40.0 cm radius and is 50.0 cm deep is filled with air at 20.0°C and 1.00 atm. A 21.0 kg piston is now lowered into the cylinder, compressing the air trapped inside. Finally, a 79.0 kg man stands on the piston, further compressing the air, which remains at 20°C.

(a) How far down (Ä h) does the piston move when the man steps onto it?
(b) To what temperature should the gas be heated to raise the piston and the man back to h(initial)?

I don't know where to start from here. Do you have to a change in volume type problem? Or could you do it using the ideal gas law?

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