Evaluate the concentration of vacancies in copper

Assignment Help Mechanical Engineering
Reference no: EM13708174

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.

Reference no: EM13708174

Questions Cloud

Device undergoes a constant temperature process : Water as a saturated vapor at 600 °F is contained in a piston-cylinder device that has an initial volume of 30 ft3. The device undergoes a constant temperature process, until the water reaches the saturated liquid condition. Draw and label the state..
Nitrogen in a piston-cylinder assembly : Nitrogen in a piston-cylinder assembly undergoes a polytropic expansion process. Initially, nitrogen is at 125 C and 144 kPa. Then it is expanded to a state of 102 kPa and 90 C. determine the heat transfer and work for the process considering no chan..
Calculate the area of the hole in the tube : A slow leak develops in an inner tube (volume, 0.5 ft3, temperature, 600F), wherein it takes 4 hours for the pressure to decrease from 30 to 25 psig. The mass flow rate of air per second under the conditions is given by 0.68pA/(RT)0.5, where the unit..
Strength and ductility of a crystalline material : Explain how you would expect the strength and ductility of a crystalline material to change as the ASTM Grain size number change from 14 to 3.
Evaluate the concentration of vacancies in copper : 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 s..
Air at standard temperature and pressure flows : Air at standard temperature and pressure flows through a horizontal galvanized iron pipe at a rate of 4.0 ft3/s. The pressure drop must not exceed 0.75 psi per 100 ft of pipe (and naturally we want to design the most economic pipe). What diameter sho..
What is the composition-in weight percent and atom percent : What is the composition, in weight percent and atom percent, of an alloy that contains 105.0 kg iron, 20.3 kg of aluminium, and 2.0 kg of copper?
Insulated piston-cylinder assembly containing a fluid : An insulated piston-cylinder assembly containing a fluid has a stirring device operated externally. The piston is frictionless, and the force holding it against the fluid is due to standard atmospheric pressure and a coil spring. The spring constant ..
Piston cylinder device initially contains steam : A piston cylinder device initially contains 0.15-kg steam at 3.5 MPa, superheated by 5 C. Now the steam loses heat to the surroundings and the piston moves down, hitting a set of stops at which point the cylinder contains saturated liquid water. the ..

Reviews

Write a Review

Mechanical Engineering Questions & Answers

  Suppose another stone is thrown horizontally from the same

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

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

the exhaust temperature of a carnot heat engine is 305degc. what is the intake temperature if the efficiency of the

  Constant-temperature expansion until the volume

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

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

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

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

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.

  Use constant specific heats at room temperature

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

hypothesis testing. think of a problemissue in your job or in life that can be addressed using a hypothesis test.

  If it takes 175 seconds for the dragster to reach 110 of

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

the refrigerant r-22 is used as the working fluid in a conventional heat pump cycle. saturated vapor enters the

Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd