A metal piston is placed in the top of a cylinder containing a gas and a liquid, as shown in the figure below, compressing the gas. Assume that the interface between the piston-cylinder is frictionless and forms a perfect seal so that none of the gas can escape. (a) Derive the equation for the absolute pressure of the gas. Identify each variable and use the subscripts P, G, and L to variables specific the cylinder, gas or liquid. State any and all assumptions. (b) Calculate the absolute pressure of the gas (in kPa) for the case where the disc is made of copper, the gas is air, the liquid is water, the diameter of the cylinder is 10cm and the height of the piston is 3cm. Values for needed constants can be found in Chapter 1 of your text, along with Tables A-1 and A-3. piston

A metal piston is placed in the top of a cylinder containing a gas and a liquid, as shown in the figure below, compressing the gas. Assume that the interface between the piston-cylinder is frictionless and forms a perfect seal so that none of the gas can escape. (a) Derive the equation for the absolute pressure of the gas. Identify each variable and use the subscripts P, G, and L to variables specific the cylinder, gas or liquid. State any and all assumptions. (b) Calculate the absolute pressure of the gas (in kPa) for the case where the disc is made of copper, the gas is air, the liquid is water, the diameter of the cylinder is 10cm and the height of the piston is 3cm. Values for needed constants can be found in Chapter 1 of your text, along with Tables A-1 and A-3. piston

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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