Engineering, 21.08.2019 16:10 richaeviney
Compare the equilibrium number of vacancies in gold (au) at 300 c and 900°c. given that the energy for vacancy formation is 1.6 ev/atom at room temperature and 1.0 ev/atom at 900c respectively. the atomic weight and density of au are 196.9 gmol and 18.63 g/cm3, respectively. analyze the effect of temperature on the equilibrium number of vacancies.
Answers: 3
Another question on Engineering
Engineering, 04.07.2019 18:10
Aflywheel accelerates for 5 seconds at 2 rad/s2 from a speed of 20 rpm. determine the total number of revolutions of the flywheel during the period of its acceleration. a.5.65 b.8.43 c. 723 d.6.86
Answers: 2
Engineering, 04.07.2019 18:10
Compute the pressure drop of 30°c air flowing with a mean velocity of 8 m/s in a circular sheet-metal duct 300 mm in diameter and 15 m long. use a friction factor, f 0.02, and pair = 1.1644 kg/m a. 37.26 pa b. 25.27 pa n c. 29.34 pa d. 30.52 pa
Answers: 1
Engineering, 04.07.2019 18:20
Find the kinematic pressure of 160kpa. for air, r-287 j/ kg k. and hair al viscosity of air at a temperature of 50°c and an absolute (10 points) (b) find the dynamic viscosity of air at 110 °c. sutherland constant for air is 111k
Answers: 3
Engineering, 04.07.2019 19:10
For a process taking place in a closed system containing gas, the volume and pressure relationship is pvi-constant. -1.5 bar, the process starts with initial conditions, pi = =0.03 m3 and ends with final volume, v2-0.05 m3 determine the work done by the gas.
Answers: 2
You know the right answer?
Compare the equilibrium number of vacancies in gold (au) at 300 c and 900°c. given that the energy f...
Questions
Biology, 28.01.2020 01:31
Mathematics, 28.01.2020 01:31
Mathematics, 28.01.2020 01:31
Mathematics, 28.01.2020 01:31
Mathematics, 28.01.2020 01:31
Mathematics, 28.01.2020 01:31
Business, 28.01.2020 01:31
