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Determine the enthalpy change Δh of oxygen, in Btu/lbm, as it is heated from 800 to 1500 R, using (a) the empirical specific heat equation as a function of temperature (Table A-2Ec), (b) the cp value at the average temperature (Table A-2Eb), and (c) the cp value at room temperature (Table A-2Ea).
The distribution coefficient of styrene distributed between ethylbenzene and ethylene glycol at 25 degrees C is .19 mass fraction in the ethylene glycol phase per mass
Hardly Able Contracting Co., Inc., Contractors and Engineers, has been in business for twenty five years and has been progressively expanding since the firm's inception
there is a legend that the inventor of chess asked fora small payment in return for the marvelous game he had developed; one grain of rice for the first square on the chess board, two for the second square, four for the third square, and so on.
A 5 ft square, 2 ft. deep spread footing is subjected to a concentric vertical load of 60 k and an overturning moment of 30 ft-k. that acts at a 45 degree angle from the side of the footing
A household uses 10 therms of natural gas per month in a gas furnace for heating at a cost of $1.00/therm. For an electric heating system the cost of electricity is $0.10/kwh. Compare the cost of the electric heater to deliver the same energy as t..
a gate having a cross section closes an opening 5 ft wide and 4 ft high in a water reservoir. its center of gravity is one foot to the left of AC and 2 ft above BC. Determine horizontal reaction developed on the gate at C.
The mean grade on a final examination was 72, and the standard deviation was 9. The top 10% of the students are to receive A's. What is the minimum grade a student must get in order to receive an A
An open test tube at 293 K is filled at the bottom with 12.1 cm of Hg and 5.6 cm of water is placed above the mercury. Calculate the pressure at the bottom of the test tube if the atmospheric pressure is 756 mm Hg.
The velocity of the 170 g hockey puck is m/s. Assume that 200 g is the equivalent mass of the stick concentrated in the blade which contacts the puck. The coefficient of restitution of between puck and blade is 0.6. Find the velocity of the blade of ..
write a computer program that generates a sequence of binomial random variables with parameters n=20 and p=0.3. a) use the inverse c.d.f approach
The students strikes the sign at a speed of 35mi/h. If the student was travelling at 55mi/h when the sign was first spotted, what was the student's associated reaction time( use practical stopping distance)
Base course aggregate has a target dry density of 119.7 lb/cu ft in place. It will be laid down and compacted in a rectangular street repair area of 2000 ft*48ft*6in. the aggregate in the stockpile contains
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