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The number of vacancies present in some metal at 857°C is 1.7 x 1024 m-3. Calculate the number of vacancies at 546°C given that the energy for vacancy formation is 1.15 eV/atom; assume that the density at both temperatures is the same.
A layer of water seperates two smooth surfaces a distance of 2r. Derive an experssion for the force needed to pul the two surfaces apart. Consider the bottom surface fixed. What is the force needed to seperate the top surface?
a venturi meter is inserted in a pipe whose diameter is 12 in. the diameter of the meter at its throat is 6 in. and the
A car accelerates uniformly rest to 81 ft/s over a distance of 700 ft along a curve of 800ft radius .Determine the magnitude of the total acceleration at the instant that speed of 81ft is reached.
How may data be managed to support a function (billing, human resources, accounting, finance, sales/marketing, training)?
Determine the specified data for water at the states indicated and locate each state on a P-v and T-v diagram.
What are effects of the annealing process on the density of these dislocations ? Can you give examples for materials?
Two collars C and D move along the vertical rod as shown. Knowing that the velocity of collar C is 50 in/s downward, find the instant centers of all three bars, the angular velocity of AB, the velocity of collard D.
a uniform rectangular cabinet having dimensions shown and mass m=50kg is placed onto a cart of mass 10 kg as shown. no slipping between cabinet and cart. determine the maximum allowable force P so that the cabinet does not tip.
the rigid plate shown in figure was observed to rotate 1.2? from the vertical plane due to the action of the external
A pitching wedge a golfer is using gives the ball a initial angle of 50 degrees, what range of velocities (Vo) will cause the ball to land within 3 ft of the hole?
What information has to be obtained in order to ensure that the method will be a satisfactory one and determine changes in composition of a fluid. Define what is meant by refractive index, and give the relationship between the incident and refracte..
The cylinder of a water-cooled reciprocating compressor contains 0.05m^3 of air at 1.01bar. It is compressed isothermally to 8.0 bar. Determine the work input and the amount of heat rejected to the compressor cooling water.
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