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Evaluate the concentration of vacancies in copper at 650C temperature. What temperature will be needed to heat treat copper such that the concentration of vacancies produced will be 1000 times more than the equilibrium concentration of vacancies at same temperature? Activation energy of copper is 20,000 cal/mol.
suppose another stone is thrown horizontally from the same building. if it strikes the ground 67 m away find the
power system assignmentthe assessment to design a substation and the associated protection system. the transformer is
the exhaust temperature of a carnot heat engine is 305degc. what is the intake temperature if the efficiency of the
One kg of air in a piston-cylinder assembly undergoes two processes in series from an initial state where p1 = 0.5 MPa, T1 = 227oC. Process 1-2: Constant-temperature expansion until the volume is twice the initial volume. Process 2-3: Constant-volume..
consider a thermodynamic system executing the two reveraible proceses shown in the sketch ab and adb. what is the heat
in a spring mass system a 1kg block is dropped from a height of 1 meter on top of a spring with a spring constant k
determine the work done by a 1-lb fluid system as it expands slowly within a piston-cylinder arrangement from an
Consider a summer air-conditioning system that is required to maintain a room (space) at specified conditions. The layouts of the system as well as the specifications are listed below. Required room temperature 23C, 50% Relative humidity.
Determine the mean effective pressure of an ideal Otto cycle that uses air as the working fluid; it's state at the beginning of compression is 13 psia and 56°F; it's temperature at the end of combustion is 1,525°F; and it's compression ratio is 11. U..
hypothesis testing. think of a problemissue in your job or in life that can be addressed using a hypothesis test.
top fuel dragsters are some of the fastest accelerating vehicles on earth. after finishing their quarter mile run a
the refrigerant r-22 is used as the working fluid in a conventional heat pump cycle. saturated vapor enters the
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