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A rigid tank is divided into two equal parts by a partition. One part of the tank contains 3.1 kg of compressed liquid at 400 kPa and 60 degrees Celcius while the other part is evacuated. The partition is now removed, and the water expands to fill the entire tank. Determine the entropy change of water during this process if the final pressure in the tank is 20 kPa.
a mass of 1.5kg of air enters a combustion chamber at atmospheric conditions of 100 kpa and 25 degrees c at state 1.
estimate the tensile strength of the wire and the work required to take 1m3 of the wire to the point of necking. the
A cylindrical steel pipe is used to transport hydrogen gas in a certain process. The density of the hydrogen in the pipe is 5kg/m3 and the density in the environment is effectively zero. The pipe has a diameter of 5cm and a thickness of 3mm. If the d..
Steels and low carbon iron alloys are by far the most common metals in industrial use. The main element of these materials is iron (Fe). Fe has a BCC crystal structure. Show for Fe the unit cell edge length a and the atomic radius R are related throu..
Determine the stress in a stay at a given temperature. A steel 'stay' of effective length 5m is fitted in between the walls of a ships refrigerated compartment when the temperature is 18 degrees centigrade.
portable electric heaters are commonly used to heat small rooms. explain the energy transformation involved during the
a solid circular cylinder of radius r rotates at angular veolicity omega in a viscous incompressible fluid that is at
the upside-down steel a frame shown in the figure is to be bolted to steel beams on the ceiling of a machine room using
a balloon is to be filled from a helium tank. the tank is large and the tank pressure remains effectively constant
ten grams of liquid water at 95 c are contained in the insulated container shown. the pin holding the frictionless
in order to help design a water channel that will be constructed on the moon an experiment is being conducted on earth.
a 0.75 inch diameter aluminum tension rod is 5 feet long and carries a load of 3000 ibf. find the tensile stress the
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