Referred to as Carrier Frequency
The answer is deindividuation - a psychological state in which a person does not feel individual responsibility.
Answer:
Solidification time is 2.78 min.
Explanation:
Chvorinov's rule states that the solidification time is directly proportional to the square of ratio of total volume to the total surface area of the cast.
Step1
Given:
Chvorinov's rule constant is 4 min/cm².
Length of the rectangular cast is 30 cm.
Width of the rectangular cast is 15 cm.
Thickness of the rectangular cast is 20 mm or 2 cm.
Calculation:
Step2
Volume of the cast is calculated as follows:
![V=l\times b\times t](https://tex.z-dn.net/?f=V%3Dl%5Ctimes%20b%5Ctimes%20t)
![V=30\times15\times2](https://tex.z-dn.net/?f=V%3D30%5Ctimes15%5Ctimes2)
V = 900 cm³.
Step3
Total surface area is calculated as follows:
A=2(lb+bt+tl)
![A=2(30\times15+15\times2+2\times30)](https://tex.z-dn.net/?f=A%3D2%2830%5Ctimes15%2B15%5Ctimes2%2B2%5Ctimes30%29)
A=1080 cm².
Step4
Time of solidification is calculated as follows:
![t=K(\frac{V}{A})^{2}](https://tex.z-dn.net/?f=t%3DK%28%5Cfrac%7BV%7D%7BA%7D%29%5E%7B2%7D)
![t=4(\frac{900}{1080})^{2}](https://tex.z-dn.net/?f=t%3D4%28%5Cfrac%7B900%7D%7B1080%7D%29%5E%7B2%7D)
t = 2.78 min.
Thus, solidification time is 2.78 min.
Answer:
c) site preparation
Explanation:
A construction process can be defined as a series of important physical events (processes) that must be accomplished during the execution of a construction project.
Generally, in the construction of any physical asset such as offices, hospitals, schools, stadiums etc, the first step of the construction process is site preparation. Site preparation refers to processes such as clearing, blasting, levelling, landfilling, surveying, cutting, excavating and demolition of all unwanted objects on a piece of land, so as to make it ready for use.
This ultimately implies that, site preparation should be the first task to be accomplished in the construction process.
Hence, the construction process typically begins with site preparation before other activities such as the laying of foundation can be done.
Additionally, construction costs can be defined as the overall costs associated with the development of a built asset, project or property. The construction costs is classified into two (2) main categories and these are; capital and operational costs.
Answer:
surface temp of fuel rod = 678.85 K
Explanation:
Given data :
D1 = 25 mm
D2 = 50 mm
T2 = 335 k
T∞ = 300 k
hconv = 0.15 w/m^2.k
ε2 = 0.05
ε1 = 1
Determine energy at Q23
Q23 = Qconv + Qrad
attached below is the detailed solution
Insert given values into equation 1 attached below to obtain the surface temperature of the fuel rod ( T1 )