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a reversible refrigerator removesm heat from sink at 8c and rejects heat to the atmosphere at 15c the refrigerator is coubled to the outputnof a reversible heat engine which receives heat at 577c and reject to the atmosphere at 15cdetermine the ratio of heat supplied to the engine to the heat removed by the refrigerator
The diameter of the soil column is 8.0 cm, the length of the soil column is 16.0 cm. The hydraulic head loss across the soil specimen is 6.4 cm. Over a period of 3 min, 350 mL of water is collected at the downstream side of the soil specimen.
A car weighing 4000 pounds strikes the stopping barrier depicted below head on at a speed of 70 mph. The stopping force in the barrier is a function of how far the car penetrates into the barrier.
A flat-belt idler pulley is molded from polystyrene with a bronze bushing. Knowing that the densities of polystyrene and bronze are 640 kg/m3 and 9100 kg/m 3, respectively, determine the x coordinate of the center of gravity of the pulley.
An 80-mil (2 mm) HDPE geomembrane with an allowable stress of 1,300 lb/in2 rests on a 3(H):1(V) side slope. A 18-inch thick cover soil with a unit weight of 110 lb/in3 (also unit weight of the back fill soil in the anchor trench) is placed of the ..
A concrete box girder bridge has the rectangular x-section. The box is prismatic and considered thin-walled. It span is L=48m and simply supported at points A,B,C and D. The supports are assume to be able to transfer tensile forces.
A cylindrical pressure tank has internal dimensions of 14.0 inches diameter, and 36 inches length from end to end. Max. recommended pressure at 70degF is 200 PSI. The cylinder has a safety relief valve which is set at 250 PSI.
What is the normality of a sodium hydroxide solution that contains 250 mg/L NaOH in 2.3 L solution? What is the concentration in mole/L and mg/L as CaCO3. Na = 23, OH = 17
the flow rate is 600 cfs. for a long distance upstream the bottom slope is 2.5%. the bottom slop of the channel abruptly changes to 0.6% and continues at that slope for a long distance determine the location of the hydraulic jump.
An object is held in the air 30m above ground and released. Assume the drag force due to air resistance is given by Fd = 1.0Vy. What is the mass of the object necessary so that it reaches ground in 3s
In what direction did the cue ball move after the collision? What percentage of its kinetic energy did the cue ball impart to the eight ball?
If the tensil testing machine can apply no more than 925 lbs. of force to the specimen, calculate the maximum rod diameter that should be used. (precision 0.000)?
a rectangular prism box which is floating on water has a length L =1200mm, breadth = 800mm, height = 500mm and mass of 52kg. when the box is loaded with the suspended hexagonal mass, its immersion is 300mm, and when it the mass is placed inside th..
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