Answer:
The correct answer is "1341.288 W/m".
Explanation:
Given that:
T₁ = 300 K
T₂ = 500 K
Diameter,
d = 0.2 m
Length,
l = 1 m
As we know,
The shape factor will be:
⇒ ![SF=\frac{2 \pi l}{ln[\frac{1.08 b }{d} ]}](https://tex.z-dn.net/?f=SF%3D%5Cfrac%7B2%20%5Cpi%20l%7D%7Bln%5B%5Cfrac%7B1.08%20b%20%7D%7Bd%7D%20%5D%7D)
By putting the value, we get
⇒ ![=\frac{2 \pi l}{ln[\frac{1.08\times 1}{0.2} ]}](https://tex.z-dn.net/?f=%3D%5Cfrac%7B2%20%5Cpi%20l%7D%7Bln%5B%5Cfrac%7B1.08%5Ctimes%201%7D%7B0.2%7D%20%5D%7D)
⇒ ![=3.7258 \ l](https://tex.z-dn.net/?f=%3D3.7258%20%5C%20l)
hence,
The heat loss will be:
⇒ ![Q=SF\times K(T_2-T_1)](https://tex.z-dn.net/?f=Q%3DSF%5Ctimes%20K%28T_2-T_1%29)
![=3.7258\times 1\times 1.8\times (500-300)](https://tex.z-dn.net/?f=%3D3.7258%5Ctimes%201%5Ctimes%201.8%5Ctimes%20%28500-300%29)
![=3.7258\times 1.8\times (200)](https://tex.z-dn.net/?f=%3D3.7258%5Ctimes%201.8%5Ctimes%20%28200%29)
![=1341.288 \ W/m](https://tex.z-dn.net/?f=%3D1341.288%20%5C%20W%2Fm)
Answer:
There were a lot of great engineering achievements presented in the 20th century. To name some, we have the electricity, airplane, radio and television, water supply and distribution, computers, television, X-ray imaging, nuclear technologies, and of course the Internet.
Answer:
false
Explanation:
the brain is only really fully devolved by age 26
Answer:
Go to explaination for the details of the answer.
Explanation:
In order to determine the lifetime (75 years) chronic daily exposure for each individual, we have to first state the terms of our equation:
CDI = Chronic Daily Intake
C= Chemical concentration
CR= Contact Rate
EFD= Exposure Frequency and Distribution
BW= Body Weight
AT = Average Time.
Having names our variables lets create the equations that will be used to derive our answers.
Please kindly check attachment for details of the answer.
Answer:
<h2>the answer of sols brother is correct</h2><h3>hope it helps you have a good day</h3><h2 />