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2kg of an ideal gas for which Cp=0.895 KJ/kg-k and Cv =0.706 KJ/kg-k is contained in a rigid, insulated container at 2 bar, 400K. A stirrer driven by an external motor is operated within the vessel until the pressure becomes 4bar. Determine, the final temperature, change in internal energy (KJ), change in enthalpy (KJ), heat transfer (KJ), and work done by stirrer
One kilogram of air in a piston-cylinder assembly undergoes a thermodynamic cycle consisting of three processes: Process 1-2: Constant specific volume At state 1, the temperature is 323 K, and the pressure is 1 bar. At state 2, the pressure is 2 bar...
refrigerant 134a is compressed with no heat transfer in a piston- cylinder assembly from 30 lbfin2 20 degrees f to 160
a special high pressure u-tube manometer is constructed to measure pressure differential in air at 13.8mpa and 20 c
Write a complete program consisting of a Main Program and Subprogram (you choose which type, but there should be only one) that fulfills the following requirements.
a high strength steel has a yield strength of 1460 mpa and a kic 98 mpa m12. calculate the size of a surface crack that
20 kg of water at 200 kpa with a quality 25 is heated under a constant volume process until its pressure reaches 400
You are required to determine the decay curves for radioactive decay of a set of heavy isotopes. The isotope, 234U decays into 230Th with a half-life of 246000 years. The isotope, 230Th decays into 226Rn with a half-life of 75380 years. The isotope, ..
a four stoke eight cylinder otto engine operates at 2500 rpm and the compression ratio is 61. the cylinder volume is
A radiator wall measuring 2 m by 3 m (WxH) is held a temperature of 125 °C. Straight aluminium fins (k = 175 W/mK) are to be mounted on the wall. The fins are 5 cm in length and 0.8 mm thick. The system is allowed to convectively transfer heat to amb..
A piston cylinder contains 1 kg of R-134a and undergoes a reversible compression process. During the process the R-134a also loses 37 kJ of heat to the environment. If the temperature of the piston remains a constant 20 oC and the initial the pressur..
1.determine the specific volume of superheated nitrogen gas at an absolute pressure of 678 kpa and -134degc based on a
8.80 times 105 gallons of tar sg 1.20 is stored in a 29.0-ft tall storage tank. what is the total mass of the liquid
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