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The activation for the climb is equal to _____ where; Uj = Activation for nucleation of jog Uv = Activation for formation of the vacancy Um = Activation for formation of the self diffusion Ui = Activation for formation of the interstitial diffusion

Correct Answer: Uj+Uv+Um
In the crystal, there is thermodynamically equilibrium number of jog present. The number of jogs present is a crystal is governed by the rate of formation of vacancy and diffusion of an atom to dislocation site.

During the jog movement, vacancy formation is faster than interstitial atom formation.

Jack takes 20 minutes to jog around the race course one time, and 25 minutes to jog around a second time. What is his average speed in miles per hour for the whole jog if the course is 3 miles long?

The positive climb involves diffusion of _____ while negative climb involves diffusion of _____

At very small driving forces, when activation energy barriers for nucleation are high, the highest nucleation rates will be produced by grain corner nucleation.

Interstitial diffusion is generally faster than diffusion by vacancy mode. This is because:

Vacancy diffusion is slower than interstitial diffusion, because_______

The activation enthalpy for interstitial diffusion increases as the size of the interstitial atom increases.

Which of the following is correct value for rate of climb if an aircraft has free stream velocity of 125 m/s? Consider steady climb at climb angle of 10°.

Consider steady climb from an altitude of 10km to 15km. If rate of climb is 20 m/s then, determine the time to climb.

Consider the following statements regarding the importance of diffusion and choose the correct answer:
1. The exchange of gases takes place by the principle of dependent diffusion
2. The process of diffusion is involved in transpiration of water vapours
3. The ions are absorbed by the simple diffusion during passive salt uptake
4. Diffusion is an effective means of transport of substances over a very short distance and helps in the translocation of food materials