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Two stainless steel plates 10 mm thick are subjected to a contact pressure of I bar under vacuum conditions for which there is an overall temperature drop of 100°C across the plates. What is the heat flux through the plates? What is the temperature drop across the contact plane?
a tank full of water that is 15 ft high and 10 feet in diameter has a hole in the bottom two inches in diameter what is
A barrel contains a 0.120-m layer of oil floating on water that is 0.250 m deep. The density of the oil is 600 kg/m.
Angela needs 20 quarts of 50% antifreeze solution in her radiator. She plans to obtain this by mixing some pure antifreeze with an appropriate amount of a 40% antifreeze solution. How many quarts of each should she use?
a cold-air standard open brayton cycle operates with a compressor pressure ratio of 12. air enters the compressor at
Air undergoes a polytrophic process in a piston cyllendar assembly from P1=1 atm, T1=70 degrees F, P2=5 atm. Employing ideal gas model with constant specific heats at 80 degrees F determine the work and heat transfer per unit mass in Btu/ibm if n=1.3..
an iron-carbon alloy gear is being hardened by carburization at 1000 oc. calculate the time in hours necessary to
two identical asteroids travel side by side while touching one another. if the asteroids are composed of homogeneous
the lifetime of a lightbulb is normally distrbuted with a mean of 1000 hrs and a standard deviation of 30 hours. find the probability that a randomly selected light bulb last longer than 1045 hours.
Two lead lumps attract each other gravitationally with force F. Now you double the mass of one lump, halve the mass of the other lump, and double the separation between them. What is the magnitude of the new gravitational force between them?
an incompressible fluid flows past in a solid plate.the x and y coordinates are measured from the leading edge of the
The DNA has N links; each link has a state in which it is closed with energy 0, and a state in which it is open with energy 'e'. The DNA can only unwind from the left; in other words, the sth link can open if all the links to the left (1, 2, 3,..
homebuilding has undergone significant advances in the last 20 years due largely to replacement of hand tools hammers
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