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Measurement of the electrical resistivity of gold wires have indicated that the equilibrium vacancy concentration decreases two orders of magnitude when the temperature is reduced from 900C to 523C. Calculate the internal energy changes associated with the formation of each vacancy in gold, and compute the fraction of lattice sites that are vacant at the melting temperature (1063oC).
a frac34 in-16 unf series sae grade 5 bolt has a frac34 -in id tube 13 in long clamped between washer faces of bolt and
a rigid container with a volume of 0.17m3 is initially filled with steam at 180kpa 340c. it is colled to 90c. a at what
an ideal gas whose adiabatic exponent is equal to gamma undergoes a cycle consisting of two isochoric and two isobaric
the magnitude of the velocity vector of the car is v80 fts. if the vector v forms an angle theta 0.09 rad with the
the suspended load exerts a force F=600 lb at A, and the weight of the bar OA is negligible. Determine the tensions at the cables and the reactions at the ball and socket support O
at a production facility 1.2 in thick 2 ft x 2 ft square brass plates denisty532.5 lbmft3 and cp 0.091 btulbmf that are
the unit cell for uranium has orthorhombic symmetry, with a, b and c lattice parameters of 0.286, 0.587 and 0.495nm, respectively. if its density, atomic weight, and atomic radius are 19.05g/cm3, 238.03g/mol and 0.1385 nm respectively, compute the..
a four-stroke-cycle engine operates on the air-standard diesel cycle. the engine has six cylinders with a 0.105 m bore
a gas is contained in a vertical cylinder fitted with a piston. atmospheric pressure outside is 1 bar and the piston
calculate the flow energy per pound-mass enthalpy and total enthalpy. two kilograms of ammonia at 200kpa .755 m3kg and
A turbine takes in 2 kg/s neon at 27C and 200 kPa with negligible velocity. The produced work is 75 kW and 30 kW of heat leaks into the turbine from the surroundings. The neon exits at 100 kPa and 230 K. Find the exit velocity of the neon.
a spring-mass is excited by a force f0sinomegat. at resonance the amplitude is measured to be 0.58 cm. at 0.80 resonant
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