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Each of the following either (a) violates the first law, (b) violates the second law, or (c) is correct. For each indicate which law (if any) is violated. Justify your answers with appropriate calculations
A] During an isothermal process a closed system of a perfect gas does 77,816.9ft-lbf of work. Heat transfer of 100 btuto the system takes place during the process.
B] A gas expands adiabatically through a nozzle. The enthalpy and velocity leaving the nozzle are each greater than those entering the nozzle.
C] Cooling water leaves a steam condenser at 150 F. the steam entering the condenser is at 1 psia and quality of 91.7percent.
Refrigerant 134a is compressed at steady state from 2.4 bar, 0 degrees celcius, to 12 bar, 50 degrees celcius. Refrigerant enters the compressor with a volumetric flow rate of 0.38m^3/min, and the power input to the compressor is 2.6 kW.
What would the B/C ratio be if the light poles were twice as far apart as assumed above?
A coal-burning steam power plant produces a net power of 300 MW with an overall thermal efficiency of 32 percent. The actual gravimetric air-fuel ratio in the furnace is calculated to be 12 kg air/kg fuel.
Two hemispheric shells are perfectly sealed together, and the internal pressure is reduced to 43 % of atmospheric pressure. The inner radius is 10.5 cm, and the outer radius is 10.75 cm. The seal is located halfway between the inner and outer radi..
Compare the stoichiometric air/fule ratios (AFR) for complete combustion of Benzene (C6 H6), Octane (C8 H8), and Ethanol (C2 H5 OH) in air (O2 + 3.76 N2). The only products should be CO2, H2O and N2.
hree wells are drilled in an unconfined aquifer with the following coordinates and observed heads: Well 1: 0,200 (meters) 50 (meters) Well 2: 240,130 54 Well 3: 140, 320 63 (a) Find the magnitude and direction of the hydraulic gradient.
It is desired to obtain dynamic similarity between 3 cfs of water(ρ = 1.94 slug/ft3, μ= 2.735 x 105Ibs/ft2) flowing in a pipe and oil 9s.g = 0.91, μ=12 x 105 ibs/ft2) flowing in a 12in diameterpipe at a velocity of 25 ft/s at 90 deg F. What size of p..
What kind of soil labs are good for the construction which is underlying the wet clay is dense sand. For example, compaction, and so on.
Given computer-generated direction field. Then sketch, by hand, an approximate solution curve that passes through each of the indicated points. Use different colored pencils for each solution curve.
A first-order reaction that results in the destruction of a pollutant has a rate constant of 0.1/day. (a) How many days will it take for 90 per- cent of the chemical to be destroyed (b) How long will it take for 99 percent of the chemical to be destr..
the front of our library has six double doors and the doors rotate open in the middle making less clerance room how can i get started
At the instant when theta=35 degrees the orizontal guide is given a constant upward velocity v0=2 m/s. For the instant calculate the force N exerted by the fixed circular slot and the force P exerted by the horizontal slot on the 0.5 kg pin A.
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