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

Chapter2: Matter And Energy

Section: Chapter Questions

Problem 10RQ: Why does an object weigh less on the moon than on earth?

See similar textbooks

Similar questions

Calculate the specific volume, specific weight and density of carbon dioxide at 43 ° C and 9? 31 kg / cm² absolute pressure?
A 98.43ft vertical column of fluid (density is 1878 kg/m3) is located where is 31.66ft/sec2. determine the pressure at the base of the column in kPa.
Two pistons of a hydraulic lift have diameters of 4 m and 2 m. What is the force exerted by the larger piston when 100 N is placed on the smaller piston?
The specific weight of a system is defined as the weight per unit volume (note that this definition violates the normal specific property-naming convention). Is the specific weight an extensive or intensive property?
An unknown mass and a 12 kg mass are tied to a light string and hung over a frictionless pulley. If the tension in the string is 50 N, what is the unknown mass?
Hello! Can I have the solution to this question, when the mass of m is 218kg. Both parts please.
A hotair balloon is inflated and its diameter is 10 ft. Assuming the balloon to be a sphere, determine the mass of air it contains in kg. Take the density of air as 1.2197 mg/cc
Balloons are often filled with helium gas because it weighs only about one-seventh of what air weighs under identical conditions. The buoyancy force, which can be expressed as Fb = ? airgVballoon, will push the balloon upward. If the balloon has a diameter of 12 m and carries two people, 70 kg each, Determine the maximum amount of load, in kg . Assume the density of air is ? =1.16kg/m3, and neglect the weight of the ropes and the cage
A 2-m3 volume of water is contained in a rigid container.Estimate the change in the volume of the water when apiston applies a pressure of 35 MPa.
A rock weighs 60 N in air and has a volume of 2.5 x103 m³. The weight of the rock when submerged in water is
Consider a stack of six pancakes. Each pancake is made of 1/4 cup (approximately 60 mL) of batter, and the density of batter is 1 g/cm3. Consider the pancake at the bottom of the stack. What is the total weight of pancakes sitting on top of it? Express your answer in kilograms, but without entering the unit. This is not a lot of weight. Assuming that pancakes have an elastic modulus of 20 kPa, that the area of each pancake is identical (approximately 80 ), and that the stack of pancakes has a height of 55mm, compute how much the single pancake at the bottom of the stack is compressed by the weight of the pancakes on top of it. This is a very small compression, so instead you place a 4 kg weight on the pancakes. Now you see that the stack noticeably compresses. Consider the stack of pancakes as one aggregate unit with a surface area of approximately 80 cm2. What is the stress on the pancakes? Express your answer in Pascals, but without including the unit. Your observation of the normal…
4. A vessel of cylindrical shape is 50 cm in diameter and 75 cm high. It contains 4 kg of a gas. The pressure measured with manometer indicates 620 mm of Hg above atmosphere when barometer reads 760 mm of Hg. Determine: (i)The absolute pressure of the gas in the vessel in bar. (ii)Specific volume and density of the gas.