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1. Carbon dioxide initially at 50 kPa, 400 K, undergoes a process in a closed system until its pressure and temperatures are 2 MPa and 800 K, respectively. Assuming ideal gas behavior, find the entropy change of the carbon dioxide (Cp = 1.054 kJ/kg.K)
2. Air initially at 0.1 MPa, 27 °C, is compressed reversibly to a final state. Find the entropy change of the air when the final state is 0.5MPa, 227 °C.
3. Air initially at 0.1 MPa, 27 °C, is compressed reversibly to a final state. Find the temperature at 0.5 MPa that makes the entropy change zero.
Energy balance, property tables, phase changes. Consider water in a pot on an alien planet. You will the pot with 1.002 L (.001002 m3) of water initially at 20°C and 75 kPa (their atmospheric pressure is different than ours). How much mass is in the ..
determine the maximum acceleration that can be achieved by the car without having the front wheels a leave the track or
water is pumped from a tank point 1 to the top of a water plant aerator point 2 at a rate of 3.0 ft3s. adetermine the
Consider an ideal air-standard Otto cycle starting at 9 psia, 42 deg F, with a compression ratio of 12, and a specific heat addition of 240 Btu/lbm. Calculate the thermal efficiency, peak temperature, specific work output, and the temperature at the ..
a solo motor cycle ride and passenger together have a mass of 320 kg the combined centre of gravity being 525mm above
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a water pump is attached to an electric motor. the inlet and outlet diameters of the pump are the same. the volume flow
a normal shock wave exists in mach 2 stream of air having temperature and pressure of 45degf and 30 psia respectively.
water flows vertically upward through a 10-m-long cylindrical pipe and then through a 10-m-long nozzle connected to it.
What are the design implications for the location and positioning of solar cells? Explain why the use of solar cells might be more appropriate in some regions of the country.
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