3. Which of the following is not an example of a high-diffusivity pathway:a) Diffusion along Grain Boundariesb) Diffusion along Dislocation Defectsc) Diffusion along Vacancy Defectsd) Diffusion along Free-Surfaces4. During a non-steady state diffusion,a) the concentration behavior does not change with timeb) the concentration behavior changes with timec) the diffusion process can be described by Fick's Second Lawd) both B and C5. The driving force of the diffusion process isa) the gradient in Gibbs free energyb) the gradient in chemical compositionc) the gradient in stress fieldd) the gradient in electrical field6. The grain boundary represented by the figure on the right is aNet flux of vacanciesa)Tilt grain boundaryb) Twist grain boundaryc) Twin boundary7. The mechanism of diffusion for a dilute solute atom of small atomic radius compared to the host materialwould be best described by:a)Substitutional diffusionb) Interstitial diffusionc) Vacancy diffusiond) all of the above8. Dislocation can help with the nucleation of a new phase bya) Reducing nucleation energy barrierb) Increasing diffusion ratec) Gliding to produce plastic straind) Both A and B9. The crystal structure of austenite isa) FCCb) ВССс) НСВ

Diffusivity is the ability of one substance diffusing into another substance. the higher the…

3. Which of the following is not an example of a high-diffusivity pathway a) Diffusion along Grain Boundaries b) Diffusion along Dislocation Defects c) Diffusion along Vacancy Defects d) Diffusion along Free-Surfaces 4. During a non-steady state diffusion, a) the concentration behavior does not change with time b) the concentration behavior changes with time c) the diffusion process can be described by Fick's Second Law d) both B and c 5. The driving force of the diffusion process is a) the gradient in Gibbs free energy b) the gradient in chemical composition c) the gradient in stress field d) the gradient in electrical field

3. Which of the following is not an example of a high-diffusivity pathway a) Diffusion along Grain Boundaries b) Diffusion along Dislocation Defects c) Diffusion along Vacancy Defects d) Diffusion along Free-Surfaces 4. During a non-steady state diffusion, a) the concentration behavior does not change with time b) the concentration behavior changes with time c) the diffusion process can be described by Fick's Second Law d) both B and c 5. The driving force of the diffusion process is a) the gradient in Gibbs free energy b) the gradient in chemical composition c) the gradient in stress field d) the gradient in electrical field

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

An Fe-C alloy is placed in a decarburizing atmosphere which holds the surface concentration at zero carbon content. a) Draw C(x) after some finite time.b) Directly beneath this, using the same axis, plot J(x).c) Directly beneath this, sketch ∂2C(x) / ∂x2 versus x, again using the same x axis.
7
Define and briefly elaborate terms listed below, support your elaboration with mathematical equations and illustrations where necessary: Concentration boundary layer, Viscous boundary layer and Thermal Boundary Layer. Diffusion equation, Laplace’s equation and Poisson’s Equation for rectangular coordinates. Analogy between heat and mass transfer. Prandtl, Schmidt, Lewis, Nusselt, and Sherwood number. Mole fraction of species and mass fraction of species. Critical radius of insulation related to heat transfer in pipes.
Mechanical
Q4(1).State the salient features of the Pakistan Environmental Protection Act (PEPA) 1997.
13 Physical and CMyLab & Master Chemistry Question 12 of 12 The zero order reaction A→ Products takes 63.5 minutes for the concentration of A to decrease from 0.970 M to 0.301 M. What is the value of k for this reaction? 1 4 7 +/- 1.76 x 104 M/min 2 3 5 6 8 9 0 0 M C x 10
The thermal expansion coefficient is the change of length of a material per unit length per degree of temperature change. A gold bar is initially 1 m long. What is the length of the gold bar after it has been heated from 298 to 473 K?
A mixture of species of A, B, and C is injected into a liquid chromatographic column with length of 20.0 cm. The obtained separation results are listed as follows: Please calculate the average number of theoretical plates from the data. Please round your result to whole number. The answer would be 2,153 (Need getting the answer)
Please kindly help. I will give a like. Thank you! a. Describe the S-curve model of diffusion on how does ‘rate of adoption’ change over time? At which-point is the rate of diffusion the fastest? b. S-curve model of diffusion: (true/false) and reasoning - k = 0, the rate of diffusion is instantaneous? - fixed k ≥ 0, the carrying capacity is determined only by the ratio of a and b? - fixed k ≥ 0, the rate of diffusion is determined only by the ratio of a and b? c. The diffusion of hybrid corn in the 1940s, who or which region seems to have adopted the hybrids more quickly and why?
Material properties of a structure cannot be affected by O Colour O manufacturing processes O composition of the material O dimension of the material
Measured vs. Theoretical Density A rectangular piece of molybdenum with dimensions 1cm x 2cm x 4cm is placed on a mass balance and is found to have a mass of 81.857 g. a) Use this data to calculate the density of the sample. b) Use atomic and crystal structure data obtained from Wikipedia to calculate the theoretical density of molybdenum. c) Offer a brief explanation as to why these two values might be different.
Diffusion of reactant atoms/molecules take place during the formation of silicon oxide. A. What is characteristic for the diffusion of these processes? B. What is the thickness of silicon lost during the formation of 2 um of SiO2?