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An equimolar mixture of helium and argon gases is to be used as the working fluid in a closed-loop gas-turbine cycle. The mixture enters the turbine at 2.5 MPa and 1300 K and expands isentropically to a pressure of 200 kPa. Determine the work output of the turbine per unit mass of the mixture.
an insulated tank is evacuated. Air from the atmosphere at 12 psia and 70 degrees farenheight is allowed to flow into the 100 cubic foot tank. What is the final temp and the final mass of air in the tank just after flow ceases.
A mining firm makes annual deposits of $250,000 into a reclamation fund for 20 years. If the firm must have $10 million when the mine is closed; what interest rate must the investment earn
Doubling the length of a truss member increases its Euler Buckling capacity by a factor of 4
When the 1.10 wt% C steel is cooled under equilibrium conditions from 925 (deg C), (i) what are the relative amounts of the primary or proeutectoid phase, the pearlite, and the total ferrite phase immediately below the eutectoid temperature
A chemical is added at the beginning of a water treatment plant at a dose of 750 lb/day. The water treatment plant provides water to a community of 200,000 people and the average water consumption in the city is 110 gallons per capita per day (gpcd).
Tall buildings can develop a significant difference in pressure between the inside and the outside of the building. Air lock entrances are used at the ground level so the pressure at the ground floor is not the same as atmospheric pressure. Assume th..
If the ball strikes the bottom of the elevator shaft in 3s, determine the height of the elevator from the bottom of the shaft at the instant the ball is released.Also find the velocity of the ball when it strikes the bottom of the shaft.
a. Calculate the total energy expended in the acceleration. b. Plot a graph of the kinetic energy of the mass against time. c. Plot a graph of the kinetic energy of the mass against distance.
A toothpaste factory situated on a large river disposes of a waste water containing villiamite (NaF) to the river on a continuous basis. The minimum flow in the river is 210 m3/s, and the discharge rate from the treatment plant is 12.5 m3/s.
Draw the iron-carbon phase diagram?
after falling from rest from a height of 32 m a 0.45 kg ball rebounds upward reaching a height of 22 m. if the contact
a wheel tractor scraper weighing 100 tons is being operated on a haul road which is now packed. this tractor is traveling fully loaded up a 6% slope to the dump site which is 0.5 miles away. the return trip is level and is also 0.5 miles away.
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