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4. 20 pts. A 10.02 kg frictionless Piston with a cross sectional area of 0.001 m2...
A frictionless piston/cylinder apparatus 100 mm in diameter contains water vapor with a quality of 20%....
A frictionless piston/cylinder apparatus 100 mm in diameter contains water vapor with a quality of 20%. The piston, which has a mass of 16 kg, is floating on the vapor 50 mm above the bottom of the cylinder. Stops above the piston prevent it from moving upward more than 30 mm. Heat is added until the temperature reaches 400?C. Find: a. the initial pressure b. the mass of water c. the quality when the piston hits the stops d. the...
* A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass...
* A gas is contained in a vertical, frictionless piston-cylinder device. The piston has a mass of 2 kg and a cross-sectional area of 30 cm2. A spring above the piston is compressed by 2.5 mm and has a spring constant, k, of 38 kN/m. a. If the atmospheric pressure is 1 atm, determine the initial pressure (P1) inside the cylinder. Heat is added to the system until the piston moves an additional 10 mm. b. How much did the...
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg...
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg of air, as shown in the figure. The air initially at 100 kPa and 20°C, is heated to 450 kPa at which the piston begins to move. The process continues until the final volume is 12 times the initial volume. Calculate (a) the final temperature in kb) the work done in kJ. (the total heat transfer in this process Use the following properties for...
Arigid tank of volume 0.5 m3 is connected to a piston-cylinder assembly by a valve as...
Arigid tank of volume 0.5 m3 is connected to a piston-cylinder assembly by a valve as shown in the diagram below. Both vessels contain pure water. They are immersed in a constant- temperature bath at 200°C and 600 kPa. Consider the tank and the piston-cylinder as- sembly as the system and the constant-temperature bath as the surroundings. Initially the valve is closed, and both units are in equilibrium with the surroundings (the bath). The rigid tank contains saturated water with...
A horizontal piston/cylinder arrangement is placed in a constant temperature bath. The piston slides in the...
A horizontal piston/cylinder arrangement is placed in a constant temperature bath. The piston slides in the cylinder with negligible friction, and an external force hold it in place against an initial gas pressure of 1 bar. The initial gas volume is 0.04 m^3. The external force on the piston is reduced gradually, and the gas expands isothermally as its volume triples. (a) If the volume of the gas is related to its pressure so that the product PV^t is constant,...
50 kg of R-134a at s80 kPa is contained in a piston-cylinder device where V =...
50 kg of R-134a at s80 kPa is contained in a piston-cylinder device where V = 0.4 m^3. The system is cooled at constant pressure until the internal energy is half the initial. Determine: 1) Final Temperature (Tfinal) 2) Final Quality (Xfinal) 3) Final Volume (Vfinal)
2. A piston-cylinder device maintain a constant pressure of 800 kPa while containing 20 kg of...
2. A piston-cylinder device maintain a constant pressure of 800 kPa while containing 20 kg of saturated water vapor. The system is heated with a resistance heater for 10 min at a current of 8 A at the standard wall voltage of 120 V. In that time, 3.2 kJ of heat is lost through the walls. What is the temperature at the heated state? 3 5-18E Hydrogen is contained in a piston-cylinder device at 14.7 psia and 15 ft. At...
A piston-cylinder assembly contains 0.5 kg of water. Initially, the piston is resting against the stops...
A piston-cylinder assembly contains 0.5 kg of water. Initially, the piston is resting against the stops when the water pressure and temperature are 1.00 bar and 125 degrees celsius, respectively. The piston has a mass of 50 kg and face area of 0.01 m^2; local atmospheric pressure is 1.01 bar; local gravitational acceleration is 9.81 m/s^2. 1. What water pressure would be required to lift the piston from the stops? 2. If the initial specific internal energy is 2544.86 kJ/kg,...
A friction-free, weighted piston-cylinder device contains 2.0 kg of water in a mixed state at a...
A friction-free, weighted piston-cylinder device contains 2.0 kg of water in a mixed state at a pressure of 150kPa and a quality of 0.60. As it sits there, heat is lost until the mixture becomes entirely a saturated liquid. How much heat is lost in the process? Thanks!
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...
A spring loaded piston-cylinder device with a cross sectional area of 0.2 m2 contains 0.6 kg of air, as shown in the figure. The air initially at 100 kPa and 20°C, is heated to 450 kPa at which the piston begins to move. The process continues until the final volume is 12 times the initial volume. Calculate (a) the final temperature in kb) the work done in kJ. (the total heat transfer in this process Use the following properties for...
Arigid tank of volume 0.5 m3 is connected to a piston-cylinder assembly by a valve as shown in the diagram below. Both vessels contain pure water. They are immersed in a constant- temperature bath at 200°C and 600 kPa. Consider the tank and the piston-cylinder as- sembly as the system and the constant-temperature bath as the surroundings. Initially the valve is closed, and both units are in equilibrium with the surroundings (the bath). The rigid tank contains saturated water with...
2. A piston-cylinder device maintain a constant pressure of 800 kPa while containing 20 kg of saturated water vapor. The system is heated with a resistance heater for 10 min at a current of 8 A at the standard wall voltage of 120 V. In that time, 3.2 kJ of heat is lost through the walls. What is the temperature at the heated state? 3 5-18E Hydrogen is contained in a piston-cylinder device at 14.7 psia and 15 ft. At...
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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