1. A gas is confined in a 3.98ft diameter cylinder by a piston, on which rests a weight. The mass of the piston 7.25lbm and weights is 270lbm. (a) What is the force in lbf exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder? (b) What is the pressure of the gas in psia? (c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 2.2ft, what is the work done by the gas in ft-lbf? What is the change in potential energy of the piston and weight?
1. A gas is confined in a 3.98ft diameter cylinder by a piston, on which rests a weight. The mass of the piston 7.25lbm and weights is 270lbm. (a) What is the force in lbf exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder? (b) What is the pressure of the gas in psia? (c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 2.2ft, what is the work done by the gas in ft-lbf? What is the change in potential energy of the piston and weight?
Refrigeration and Air Conditioning Technology (MindTap Course List)
8th Edition
ISBN:9781305578296
Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson
Chapter1: Heat, Temperature, And Pressure
Section: Chapter Questions
Problem 6RQ: One British thermal unit will raise the temperature of _____ 1b of water _____F.
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1. A gas is confined in a 3.98ft diameter cylinder by a piston, on which rests a weight. The mass of the piston 7.25lbm and weights is 270lbm. (a) What is the force in lbf exerted on the gas by the atmosphere, the piston, and the weight, assuming no friction between the piston and cylinder? (b) What is the pressure of the gas in psia? (c) If the gas in the cylinder is heated, it expands, pushing the piston and weight upward. If the piston and weight are raised 2.2ft, what is the work done by the gas in ft-lbf? What is the change in potential energy of the piston and weight?
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