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Question 1 Air is contained in a vertical piston-cylinder assembly fitted with an electrical heater. The...
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor....
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 1 bar on the top of the piston, which has a mass of 45 kg and a face area of 0.09 m². Electric current passes through the resistor, and the volume of the air slowly increases by 0.45 m while its pressure remains constant. The mass of the air is 0.27 kg. and its specific internal energy increases...
Air is contained in a piston cylinder device that has a resistance heater inside. The atmosphere...
Air is contained in a piston cylinder device that has a
resistance heater inside. The atmosphere exerts a pressure of 100
kpa on the piston of which it has a mass of 45 kg and a transverse
area of 0.9 m². An electric current passes through the resistance
of the air volume slowly increases by 0.45 m³ while the pressure
remains constant. The mass of the air is 0.27 kg and its specific
internal energy increases 42 kJ / kg,...
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C,...
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C, 125 kPa, and a volume of 0.02 mº. Energy in the amount of 1.8 kJ is transferred to the air by the paddle wheel. The volume of the air in the piston-cylinder increases to 0.05 mº at constant pressure. If the heat transfer between the air and its surroundings can be ignored, determine (a) the mass of the air in the piston-cylinder (b) the...
A piston cylinder assembly fitted with a slowly rotating paddle wheel contains 0.13 kg of air...
A piston cylinder assembly fitted with a slowly rotating paddle wheel contains 0.13 kg of air at 300K. The air undergoes a constant pressure process to a final temp of 400K. During the process heat is transfered to the air by Q=12kJ. Assuming the ideal gas model with k=1.4 and negligible changes in kinetic and potential energy for the air, determine the work done by the paddle on the air and the work done by the air to displace the...
Air is contained in a vertical piston-cylinder assembly such that the piston is in static...
Air is contained in a vertical piston-cylinder assembly such that the piston is in static equilibrium The atmosphere exerts a pressure of 101 kPa on top of the 0.8 meter-diameter piston. The gage pressure of the air inside the cylinder is 1.2 kPa. Subsequently, a weight is placed on top of the piston, as shown below, causing the piston to descend until reaching a new static equilibrium position. At this position, the gage pressure of the air inside the cylinder is...
A piston-cylinder assembly fitted with a slowly rotating paddle wheel contains 0.19 kg of air, initially...
A piston-cylinder assembly fitted with a slowly rotating paddle wheel contains 0.19 kg of air, initially at 300 K. The air undergoes a constant-pressure process to a final temperature of 440 K. During the process, energy is gradually transferred to the air by heat transfer in the amount 12 kJ. Assuming the ideal gas model with k = 1.4 and negligible changes in kinetic and potential energy for the air, determine the work done by the paddle wheel on the...
Air contained within a piston-cylinder assembly is slowly heated. As shown below, during this process the...
Air contained within a piston-cylinder assembly is slowly
heated. As shown below, during this process the pressure first
varies linearly with volume and then remains constant. Determine
the total work, in kJ.
5. Air contained in a piston-cylinder assembly is slowly heat pressure first varies linearly and then is constant. Determ 150 100 LPa 50 003 0.045 007 V(m) 7. Carbon dioxide gas contained within a piston-cy
A piston–cylinder assembly fitted with a slowly rotating paddle wheel contains 0.19 kg of air, initially...
A piston–cylinder assembly fitted with a slowly rotating paddle
wheel contains 0.19 kg of air, initially at 300 K. The air
undergoes a constant-pressure process to a final temperature of 420
K. During the process, energy is gradually transferred to the air
by heat transfer in the amount 12 kJ.
Assuming the ideal gas model with k = 1.4 and negligible
changes in kinetic and potential energy for the air, determine the
work done by the paddle wheel on the...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where D = 15 cm. A vertical shaft whose cross-sectional area is 0.8 cm is attached to the top of the piston. The total mass of the piston and shaft is 25 kg. While the gas is slowly heated, the internal energy of the gas increases by 0.1 k), the potential energy of the piston-shaft combination increases by 0.2 k), and a force of F...
A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the...
A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open to the air at the top. Friction is absent. The spring constant of the spring is 4600 N/m. The piston has a negligible mass and a radius of 0.020 m. (a) When the air beneath the piston is completely pumped out, how much does the atmospheric pressure cause the spring to compress? (b) How much work does the atmospheric pressure...
Question Two (10 Marks] Air is contained in vertical piston-cylinder assembly fitted with an electrical resistor. The atmosphere exerts a pressure of 1 bar on the top of the piston, which has a mass of 45 kg and a face area of 0.09 m². Electric current passes through the resistor, and the volume of the air slowly increases by 0.45 m while its pressure remains constant. The mass of the air is 0.27 kg. and its specific internal energy increases...
Air is contained in a piston cylinder device that has a
resistance heater inside. The atmosphere exerts a pressure of 100
kpa on the piston of which it has a mass of 45 kg and a transverse
area of 0.9 m². An electric current passes through the resistance
of the air volume slowly increases by 0.45 m³ while the pressure
remains constant. The mass of the air is 0.27 kg and its specific
internal energy increases 42 kJ / kg,...
1/2 Question 3 A piston-cylinder assembly fitted with a paddle wheel contains air, initially at 38°C, 125 kPa, and a volume of 0.02 mº. Energy in the amount of 1.8 kJ is transferred to the air by the paddle wheel. The volume of the air in the piston-cylinder increases to 0.05 mº at constant pressure. If the heat transfer between the air and its surroundings can be ignored, determine (a) the mass of the air in the piston-cylinder (b) the...
A piston-cylinder assembly fitted with a slowly rotating paddle wheel contains 0.19 kg of air, initially at 300 K. The air undergoes a constant-pressure process to a final temperature of 440 K. During the process, energy is gradually transferred to the air by heat transfer in the amount 12 kJ. Assuming the ideal gas model with k = 1.4 and negligible changes in kinetic and potential energy for the air, determine the work done by the paddle wheel on the...
Air contained within a piston-cylinder assembly is slowly
heated. As shown below, during this process the pressure first
varies linearly with volume and then remains constant. Determine
the total work, in kJ.
5. Air contained in a piston-cylinder assembly is slowly heat pressure first varies linearly and then is constant. Determ 150 100 LPa 50 003 0.045 007 V(m) 7. Carbon dioxide gas contained within a piston-cy
A piston–cylinder assembly fitted with a slowly rotating paddle
wheel contains 0.19 kg of air, initially at 300 K. The air
undergoes a constant-pressure process to a final temperature of 420
K. During the process, energy is gradually transferred to the air
by heat transfer in the amount 12 kJ.
Assuming the ideal gas model with k = 1.4 and negligible
changes in kinetic and potential energy for the air, determine the
work done by the paddle wheel on the...
Problem 2.054 SI The figure below shows a gas contained in a vertical piston-cylinder assembly, where D = 15 cm. A vertical shaft whose cross-sectional area is 0.8 cm is attached to the top of the piston. The total mass of the piston and shaft is 25 kg. While the gas is slowly heated, the internal energy of the gas increases by 0.1 k), the potential energy of the piston-shaft combination increases by 0.2 k), and a force of F...
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