
Concept explainers
(a)
The fraction of atom sites those are vacant in gold at the given temperature.

Answer to Problem 4.15P
The fraction of atom sites that are vacant in gold at the
Explanation of Solution
Given:
The enthalpy of formation of one vacancy in pure gold is
The temperature is
Formula used:
The expression to calculate the fraction of atom sites that are vacant is gold is give by,
Here,
Calculation:
The fraction of atom sites that are vacant is calculated as,
Substitute
Conclusion:
Therefore, the fraction of atoms that are vacant in gold at the
(b)
The contribution to the volume coefficient of expansion for gold due to the formation of vacancies.

Answer to Problem 4.15P
The contribution to the volume coefficient of expansion for gold due to the formation of vacancies is
Explanation of Solution
Formula used:
The relation between the fraction of atom sites that are vacant and the volume change is given by,
Here,
The expression for the volume coefficient of expansion of gold is given by,
Here,
Substitute
Here,
Calculation:
The volume coefficient of expansion for gold is calculated as,
Substitute
Conclusion:
Therefore, the contribution to volume coefficient of expansion for gold is
(c)
The fraction of volume coefficient of expansion for gold.

Answer to Problem 4.15P
The fraction of volume coefficient of expansion for gold is
Explanation of Solution
Formula used:
The fraction of volume of coefficient of expansion of gold is given by,
Here,
Calculation:
The fraction of volume of coefficient of expansion of gold is calculated as,
Substitute
Conclusion:
Therefore, fraction of volume coefficient of expansion for gold is
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Chapter 4 Solutions
Materials Science And Engineering Properties
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- Pick the rural location of a project site in Victoria, and its catchment area-not bigger than 25 sqkm, and given the below information, determine the rainfall intensity for ARI = 5, 50, 100 year storm event. Show all the details of the procedure. Each student must propose different length of streams and elevations. Use fig below as a sample only. Pt. E-ht. 95.0 200m 600m PLD-M. 91.0 300m Pt. C-93.0 300m PL.B-ht. 92.0 PL.F-ht. 96.0 500m Pt. A-M. 91.00 To be deemed satisfactory the solution must include: Q.F1.1.Choice of catchment location Q.F1.2. A sketch displaying length of stream and elevation Q.F1.3. Catchment's IFD obtained from the Buro of Metheorology for specified ARI Q.F1.4.Calculation of the time of concentration-this must include a detailed determination of the equivalent slope. Q.F1.5.Use must be made of the Bransby-Williams method for the determination of the equivalent slope. Q.F1.6.The graphical display of the estimation of intensities for ARI 5,50, 100 must be shown.arrow_forwardQUANTITY SURVEYINGarrow_forward3. (a) Use method of joints to determine forces in all members (all distances are in mm) (b) Find the resultant force at the pin support and state its angle of inclination FIGURE 2 2400 3.3 kN 6 3.6 ky 12 2 + 2400 0.7 kN + 2400 3.3kN + 2400arrow_forward
- Materials Science And Engineering PropertiesCivil EngineeringISBN:9781111988609Author:Charles GilmorePublisher:Cengage Learning
