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A cylinder of compacted scrap metal measuring 2 m in length and 0.5 m in diameter is suspended from a spring scale at a location where the acceleration
A copper wire of diameter 2 mm is 10 m long and stretched out between two posts. The normal stress (pressure) s = E (L - Lo)/Lo, depends on the length L
A cooking pan whose inner diameter is 20 cm is filled with water and covered with a 4-kg lid.
A cylinder contains ethylene, C2H4, at 1.536 MPa, -13°C. It is now compressed in a reversible isobaric (constant P) process to saturated liquid.
A cooler in an air conditioner brings 0.5 kg/s air at 35oC to 5oC, both at 101 kPa and it then mix the output with a flow of 0.25 kg/s air at 20oC
A cylinder containing ammonia is fitted with a piston restrained by an external force that is proportional to cylinder volume squared
A cylinder containing 1 kg of ammonia has an externally loaded piston. Initially the ammonia is at 2 MPa, 180°C and is now cooled to saturated vapor
A constant pressure piston cylinder contains 0.2 kg water as saturated vapor at 400 kPa. It is now cooled so the water occupies half the original volume.
A container equipped with a resistance heater and a mixer is initially filled with 3.6 kg of saturated water vapor at 120°C
A constant-volume tank contains a mixture of 1 kmol H2 and 1 kmol O2 at 25°C and 1 atm. The contents are ignited. Determine the final temperature
A constant-volume tank contains 5 kg of air at 100 kPa and 327°C. The air is cooled to the surroundings temperature of 27°C
A container with liquid nitrogen at 100 K has a cross sectional area of 0.5 m2. Due to heat transfer, some of the liquid evaporates and in one hour the liquid
A commercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -30°C by rejecting its waste heat to cooling
A closed rigid container is charged with propane, C3 H6, and 150% theoretical air at 100 kPa, 298 K. The mixture is ignited and burns with complete combustion.
A close system consisting of 0.2 lbmol of air undergoes a polytrophic process from P1=20 lbf/in.2, ?1 = 11.50 ft3/lb to a final state where P2= 80 lbf/in2
A closed system consists of 0.5 kmol of ammonia occupying a volume of 6 m3. Determine
A closed system consisting of 5kg of a gas undergoes a process during which the relationship between pressure and specific volume is pv1.3 = constant.
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent.
A Carnot heat engine receives energy from a reservoir at Tres through a heat exchanger where the heat transferred is proportional to the temperature difference
A Carnot heat engine operates between a source at 1000 K and a sink at 300 K. If the heat engine is supplied with heat at a rate of 800 kJ/min
A Carnot heat engine is operating between a source at TH and a sink at TL. If it is desired to double the thermal efficiency of this engine
A Carnot cycle operates between the temperature limits of 300 and 2000 K, and produces 600 kW of net power. The rate of entropy change of the working fluid
A car with mass 1275 kg drives at 60 km/h when the brakes are applied quickly to decrease its speed to 20 km/h.
A certain application requires maintaining the refrigerated space at -32°C. Would you recommend a simple refrigeration cycle with refrigerant-134a
I would say that Cloud computing as a whole is nothing new. I like the definition that some people use which says that it is called the Cloud