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air enters an insulated turbine operating at steady state at 4.89 bar, 597 deg. C, and exits at 1 bar, 297 deg C. Neglecting kinetic and potential energy changes and assuming the ideal gas model determine the work developed of air flowing through the turbine
Determine the purchasing power 3 years from now of an investment of $20,000 today. The investment is earning a market interest rate of 8%, and the inflation rate is 3%.
Suppose in 100 years energy consumption is still 330 Ej/yr, but coal supplies only 20 percent of total demand, natural gas supplies 30 percent, and oil 10 percent. The remaining 40 percent of demand is met by noncarbon-emitting sources.
The water velocity is estimated to be 3.0 m/sec. Acetone has a density of 0.786 gm/mL and a half-life in water of 20.0 hr. Determine the concentration of acetone in the river due to this pulse release at distance of 2, 4, and 7 km from the site at..
Straight pipe, pump head=100 ft, pipe diameter=4inches, velocity is 10 ft/sec, no elevation changes. Water at 20C. What is the length of the smooth pipe
The coal may either be moved by train from the mine to power plants near where the power is used, or the coal could be combusted near the mine mouth to generate electricity and the electricity could be transmitted over long distances to the users.
An airport corridor is 30 ft wide. given a peak demand of 300 pedestrians per minute and an average walk speed of 3 ft/s, estimate the LOS at the corridor
The heat exchanger consists of 12 m of copper tubing that is 2 cm in diameter with 19 return bends. The flow rate is 3 x 10-4 m3/s. Water enters at 20 C and exits at 80 C. The elevation difference between the entrance and the exit is 0.8 m.
Given simply supported beam with an overhang. The beam is 12 inches wide by 24 inches deep, and the slab is 6 inches deep. use a roof live load of 20 psf, and a concrete density of 150 pdf. the beams are spaced 15 feet apart.
Determine the diameter of glass tubing that is necessary for the capillary rise to be less than 0.5 mm. Assume the fluid is water with surface tension equal to 0.0728 N/m and specific weight equal to 9800 N/m3
Five $1,000 bonds having a bond rate of 8% per year payable quarterly are pur chased for $4,940 and kept for 6 years, at which time they are sold. Determine the selling price that yields a 6% effective annual return on the investment.
The density of 70.5 wt% aqueous perchloric acid is 1.67 g/mL. a. How many grams of solution are in 1.000 L b. How many grams of HClO4 are in 1.000 L c. How many moles of HClO4 are in 1.000 L
The C-S-H gel can come in a variety of chemical structure forms. If it has a cement notation form of C3 S2 H8, what is the periodic table form of this C-S-H gel. What would be the balanced equations for C3 S and C2 S when hydrated into this form
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