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Water in a piston/cylinder, shown in Fig. P6.177, is at 1 MPa, 500?C. There are two stops, a lower one at which V min = 1 m3 and an upper one at V max = 3 m3. The piston is loaded with a mass and outside atmosphere such that it floats when the pressure is 500 kPa. This setup is now cooled to 100?C by rejecting heat to the surrounding at 20?C. Find the total entropy generated in the process.
The ultimate normal strength of the wood is ?ult = 1800 psi and the ultimate shear strength of the wood is fault = 800 psi. The width of the specimen under tension is b = 1.7 in, and the specimen is 1.0 in thick.
A barge measures 10 ft (depth) by 35 ft by 120 ft and weighs 100 U.S. tons. The barge floats in fresh water (specific weight = 62.4 lb/ft3) and is evenly filled with 38,000 bushels of corn (60 lb/bushel).
What type of cement would you use in each of the following cases? Why?
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.
How do the concepts of green design, industrial ecology, and sustainable developement differ from past approaches to engineering design Prepare a brief report on this topic using some specific examples for illustration.
At an axial load of 23 kN, a 40-mm-wide by 10-mm-thick polyimide polymer bar elongates 2.7 mm while the bar width contracts 0.17 mm. The bar is 240 mm long. At the 23-kN load, the stress in the polymer bar is less than its proportional limit.
Find the volume of the solid S. The base of S is the region enclosed by the parabola y=4-3x^(2) and the x-axis. Cross sections perpendicular to the y-axis are squares.
Repeat LEM(Limit Equilibrium Method) analysis in clay (undrained) using a circular failure surface, with the center of the circle a distance h above the edge of the footing. What ratio of h/B gives the minimum value of Nc? How does this compare with ..
what are the factors affecting the hydraulic conductivity?
The first pipe of 0.4-m diameter is 500 m long, the second pipe 600 m long, size 0.3 m, and the last pipe is 500 m long of diameter 0.2 m. If the elevation difference between two reservoirs is 30 m, calculate equivalent pipe size and flow in the p..
It is placed carefully in a small porcelain dish with a volume of 19.3 cm3 and weighs 34.67 g. After oven drying. the soil pat displaced 216.8 g of mercury.
Problem Statement: A rectangular beam having b = 10 in. and d = 17.5 in. spans 15 ft face to face of simple supports. It is reinforced for flexure with three
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