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Air undergoes a poly tropic process in a piston-cylinder assembly from P1 = 1 atm, T1 = 70ºF to P2 = 3 atm. Employing the ideal gas model with constant specific heats at 80ºF, determine the work and heat transfer per unit mass, in Btu/lbm, if
1. n = 1
2. n = the specific heat ratio, k
You are asked to measure non-destructively the yield strength and tensile strength of an annealed 65-45-12 cast iron structural member. Fortunately, a small hardness indentation in this structural design will not impair its future usefulness, which i..
a rigid vessel contains 10 kg of steam. the steam is initially at 10 bar and 300 c. after a period of time the pressure
What is the enthalpy of this reaction? Assume that no heat is lost to the surroundings or to the coffee cup itself.
Preliminary cost estimates for a 1 million-Kw nuclear-powered thermal power station require an estimate of the cooling water demands of the facility. For purposes of this estimate, the heat engine can be assumed to be a carnot engine operating betwee..
jus before it lifts off a 10500 kg airplane is traveling at 60 fts. the total horizontal force exerted by the planes
consider an electrolytic cell for producing hydrogen and oxygen mih2so4 0.5mmii where mi and mii are carbon rods. a
Consider a refrigerator that accepts 15 kW of heat in the evaporator and rejects 19.76 kW of heat from the condenser. The compressor requires an input of 5 kW of power and loses 0.24 kW of heat. Determine the coefficient of performance for this refri..
Using the standard machining parameter formulae for milling, determine the speed (rpm), feed (ipm) and machining time (TM) recommended to horizontal mill ANSI #1018 cold rolled steel that is 1.50 inch long with a 10 tooth 4.0 inch diameter slab mill ..
a small household refrigerator is used to cool 20 liters of water initially at 22 degrees c. the cop of the
saturated vapor at 8 mpa enters the turbine of a 100 mw net power vapor power plant. the pressure at the exit of the
3 rigid tank initially contains refrigerant-134a at 14oc. at this state 70 of the mass is in the vapour phase and the
determine the microstructure for eutectoid steel that has undergone the following heat treatment. for each heat
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