An insulated piston-cylinder device initially contains 0.3 m³ of carbon dioxide at 200 kPa and 27°C. An electric switch is turned on,and a 90.0-V source supplies current to a resistance heater inside the cylinder for a period of 10 min. The pressure is held constantduring the process, while the volume is doubled. Determine the current that passes through the resistance heater. The gas constantand molar mass of CO2 are R 0. 1889 kPa m³/kg K and M= 44 kg/kmol (Table A-1). The specific heat of CO2 at the average(300 + 600)/2 = 450 K is cp, avg0.978 kJ/kg C (Table A-2b). (Round the final answer to threetemperature of Tavg"decimal places.)The current that passes through the resistance heater is5.745 A.

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Answered: An insulated piston-cylinder device…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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Ex: Argon in the amount of 1.5 kg fills a 0.04-m³ piston- cylinder device at 550 kPa. The piston is now moved by changing the weights until the volume is twice its original size. During this process, argon's temperature is maintained constant. Determine the final pressure in the device.
solve correctly ,important.
wo springs with same spring constant are installed in a massless piston/cylinder with the outside air at 100 kPa. If the piston is at the bottom, both springs are relaxed and the second spring comes in contact with the piston at V = 2 m3. The cylinder contains ammonia initially at -2°C, x = 0.13, V = 1 m3, which is then heated until the pressure finally reaches 1200 kPa. At what pressure will the piston touch the second spring? Find the final temperature and the total work done by the ammonia.
A rigid tank contains 2.0 kg of nitrogen at 100 K and ? = 0.50. Then, 0.5 kg ofnitrogen is removed from the tank through a valve. If the temperature remains constant throughout the process, determine the final state of the nitrogen inside the tank and the volume of nitrogen removed if the valve is located at(a) The top(b) The bottom
A rigid steel tank contains a mixture of vapor and liquid water at a temperature of65 C. The tank has a volume of 0.5 m3. The liquid phase occupying 30% of thevolume. Determine the amount of heat added to the system to raise the pressureto 3.5 MPa.
A 10 cu. m vessel initially contains 5 cu. m of liquid water and 5 cu. m of saturated water vapor at 100 kPa. calculate the internal energy of the system using the steam table.
As shown in the figure below, you have a system including a Polyethylene vessel with mass Myessel = 0.229 kg. The vessel contains water with mass Mwater = 0.399 kg. Both the vessel and water are initially at a temperature of 54.6 degrees Celsius. You add steam into the system. The steam has an initial temperature of 167.4 degrees Celsius and a mass of Msteam = 10.9564 kg. The system will reach equilibrium with all the water having vaporized at some final temperature above 100 degrees Celsius. Steam water Pressure Vessel Find the system final temperature, Tfinal = Material c (J/(kg K)) Aluminum 897 1820 Beryllium Cadmium Iron Lead 129 Polyethylene 2303 Steel 466 Uranium 116 231 412 All of the water turns to steam. The system reaches equilibrium at T > 100° C Water c (J/(kg K)) ice 2090 4186 2010 water steam degrees Celsius Water L (J/kg) 334000 Fusion Vaporization 2230000
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A piston-cylinder device initially contains 0.4 m^3 of saturated water vapor at a pressure of 200 kPa. At this time, a linear spring (K = 150 N/m, no other information about spring provided) is touching the piston, but exerts no force upon it. Heat is now transferred to the water vapor for 30 minutes through a resistive heater having a current of 10 amperes. The pressure and volume rise to 300 kPa and 0.6 m^3 while the system lost 10 kJ of heat during this process. Determine the voltage of the heater. Show detailed calculations and specify any required values found on thermodynamic tables.
A 0.04-m3 piston-cylinder device contains 1.4 kg of argon at 525 kPa. The piston is moved until the volume is twice its original size. The temperature of argon remains constant. a. Draw and label a schematic for this process; state any assumptions b. Calculate the final pressure in the device
1) A piston-cylinder assembly contains 10 kg of refrigerant 134a. Initially, 8 kg of SA134a is in the liquid phase and the temperature is -10°C. Then there is a slow heat transfer to SA-134a, the piston rises and the piston touches the stoppers when the volume is 400 liters. (a) Show the phase change in the P-V diagram, (b) the temperature of the system at the moment the piston contacts the stoppers, (c) calculate the work done during the process.
.A kilogram of Argon gas( MW= 40 kg/kmol, k=5/3) is in a piston cylinder set-up. Initially, it has pressure of 30kPa and volume of 0.2m3 and expanded to 20 kPa due to heat transfer. If the process is said to be isovolumic, find initial and final temperatures.

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