Find mass of nitrogen using data from compressibility chart
A tank contains 0.05m^3 of Nitrogen (R=0.2968kj/kg*k) at T=-21 degrees Celcius and P=10MPa. Assume a non-ideal gas. Find the mass of Nitrogen using data from the compressibility chart.
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Below, is a pay-off table for four projects P1, P2, P3, and P4; with different possible outcomes in four different states of the world S1, S2, S3, and S4. The value in parenthesis and next to each state indicates the probability of that state. Wh
A heat engine of 30% thermal efficiency drives a refrigerator having a coefficient of performance of 4. Determine the ratio of the heat input to the engine to the heat remove from the cold body by the refrigerator.
The engine produces 75 kW of power and rejects heat into the cold reservoir at a rate of 9 kW. (a) Find the efficiency of the heat engine, (b) Is the engine reversible?
Water at 3 MPa and 160 degree C is produced from water at 2. 5 MPa and 40 degree C in an irreversible process at a rate of 5. 6 kg/s. Find the rate of entropy change of the process (kW/K).
Determine the final air pressure and temperature, and the final position of the piston (i.e. the distance between the bottom of the cylinder and the bottom of the piston, in the final state).
The president of the American Insurance Institute wants to compare the yearly costs of auto insurance offered by two leading companies. He selects a sample of 15 families, some with only a single insured driver, others with several teenage drivers
Five percent of this flow is diverted for feedwater heating at 600 kPa. Determine the inlet steam temperature and power produced by this turbine, in kW.
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