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PASHBASAN 5. Work: Consider a simple piston-cylinder system that holds a gas under pressure. How much...
This question is about work and pressure A frictionless piston cylinder contains a gas at a...
This question is about work and pressure A frictionless piston cylinder contains a gas at a pressure of 200 kPa. The cross-sectional area of the piston is 0.04 m². Heat transfers to the gas, and as a result, the piston and load are raised through a distance (*) of 0.4 m. Assume the atmospheric air pressure to be 100 kPa. (Hint: this process is isobaric) 0 Is this an open system or a closed system and why? [2 marks] (I)...
finding work and heat transfer given a piston-cylinder assembly
As shown in Fig. P2.56, a gas contained within a piston–cylinder assembly, initially at a volume of 0.1 m3, undergoesa constant-pressure expansion at 2 bar to a final volume of0.12 m3, while being slowly heated through the base. Thechange in internal energy of the gas is 0.25 kJ. The pistonand cylinder walls are fabricated from heat-resistant material,and the piston moves smoothly in the cylinder. The localatmospheric pressure is 1 bar.(a) For the gas as the system, evaluate work and heat...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at p 2 bar to a final volume of V2 0.2 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated from heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. Piston-...
Thermodynamics: Work & Heat Transfer in Piston-Cylinder
for part a) got W = 4kJ, dQ = 4.25 kJfor part b) got w = 2kJ...How do you find ΔPE without mass? Do you use the conservation of energy equation?As shown in Fig. P2.56, a gas contained within a piston–cylinder assembly, initially at a volume of 0.1 m3, undergoesa constant-pressure expansion at 2 bar to a final volume of0.12 m3, while being slowly heated through the base. Thechange in internal energy of the gas is 0.25 kJ. The pistonand...
A cylinder with a 16-cm-diameter piston contains gas at a pressure of 3.0atm. a) How much force does the gas exert on...
A cylinder with a 16-cm-diameter piston contains gas at a pressure of 3.0atm. a) How much force does the gas exert on the piston? b) How much force does the environment exert on the piston? c) The gas expands at constant pressure and pushes the piston out 10cm. How much work is done by the environment? d) How much work is done by the gas?
(10 ponts) A piston-cylinder that has a piston initially resting on top of a set of...
(10 ponts) A piston-cylinder that has a piston initially resting on top of a set of stops initially contains 0.35 kg of hellum gas at 100 kPa and 16.8 C. A pressure of 171 kPa is required to lift the piston off the stops. Helium a) At what temperature will the piston begin to move? b) How much heat must be added before the piston starts to rise? c) If the volume of the gas inside the cylinder increases by...
Problem 2. As shown in the figure, a gas contained within a piston-cylinder assembly, initially at...
Problem 2. As shown in the figure, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at 2 bar to a final volume of 0.12 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated fronm heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. (a) For...
Consider a piston-cylinder device (system) that contains 0.06 m3 of air at 300 kPa and 125...
Consider a piston-cylinder device (system) that contains 0.06 m3 of air at 300 kPa and 125 ̊C. (a) If the volume of air in the device increases to 0.15 m3 while the pressure remains constant, determine the work done by the system during the process. (b) If as a result of heat transfer to the surrounding, the pressure and temperature in the device drop to 240 kPa and 55 ̊C, respectively, and the piston is held such that the volume...
Spring 2018 Calculating work. A gas is enclosed in a cylinder fitted with a light piston...
Spring 2018 Calculating work. A gas is enclosed in a cylinder fitted with a light piston that moves without friction. This piston always exerts a constant, atmospheric pressure on the gas so that the pressure within the gas is constant, atmospheric pressure. 4. Sketch a plot of pressure vs. volume in this situation. To do this, you can plot points. What is the pressure of the gas when the volume is 12.0 m? 18.2 m? When 1250 kJ of heat...
A piston/cylinder arrangement with an cross sectional area of 1 mạ contains carbon dioxide at 200...
A piston/cylinder arrangement with an cross sectional area of 1 mạ contains carbon dioxide at 200 kPa and 290 K. The cylinder has a thick piston that initially held by a pin as shown in Figure 1. The metal piston has a density of 8000 kg/mº, standard acceleration of gravity, &c is 9.81 m/s and the atmospheric pressure is 101 kPa. The pin is now removed, allowing the piston to move and after a while the gas returns to 290...
This question is about work and pressure A frictionless piston cylinder contains a gas at a pressure of 200 kPa. The cross-sectional area of the piston is 0.04 m². Heat transfers to the gas, and as a result, the piston and load are raised through a distance (*) of 0.4 m. Assume the atmospheric air pressure to be 100 kPa. (Hint: this process is isobaric) 0 Is this an open system or a closed system and why? [2 marks] (I)...
As shown in the figure below, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at p 2 bar to a final volume of V2 0.2 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated from heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. Piston-...
(10 ponts) A piston-cylinder that has a piston initially resting on top of a set of stops initially contains 0.35 kg of hellum gas at 100 kPa and 16.8 C. A pressure of 171 kPa is required to lift the piston off the stops. Helium a) At what temperature will the piston begin to move? b) How much heat must be added before the piston starts to rise? c) If the volume of the gas inside the cylinder increases by...
Problem 2. As shown in the figure, a gas contained within a piston-cylinder assembly, initially at a volume of 0.1 m3, undergoes a constant-pressure expansion at 2 bar to a final volume of 0.12 m3, while being slowly heated through the base. The change in internal energy of the gas is 0.25 kJ. The piston and cylinder walls are fabricated fronm heat-resistant material, and the piston moves smoothly in the cylinder. The local atmospheric pressure is 1 bar. (a) For...
Spring 2018 Calculating work. A gas is enclosed in a cylinder fitted with a light piston that moves without friction. This piston always exerts a constant, atmospheric pressure on the gas so that the pressure within the gas is constant, atmospheric pressure. 4. Sketch a plot of pressure vs. volume in this situation. To do this, you can plot points. What is the pressure of the gas when the volume is 12.0 m? 18.2 m? When 1250 kJ of heat...
A piston/cylinder arrangement with an cross sectional area of 1 mạ contains carbon dioxide at 200 kPa and 290 K. The cylinder has a thick piston that initially held by a pin as shown in Figure 1. The metal piston has a density of 8000 kg/mº, standard acceleration of gravity, &c is 9.81 m/s and the atmospheric pressure is 101 kPa. The pin is now removed, allowing the piston to move and after a while the gas returns to 290...
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