A 20-cm-diameter vertical cylinder is sealed at the top by a frictionless 18kg piston. The piston is 79cm above the bottom when the gas temperature is 309?C. The air above the piston is at 1.00 atmpressure.
a) What is the gas pressure inside the cylinder?
b) What will the height of the piston be if the temperature is lowered to 19.0 ?C?