Answer:3.47 m
Explanation:
Given
Temperature(T)=300 K
velocity(v)=1.5 m/s
At 300 K
![\mu =1.846 \times 10^{-5} Pa-s](https://tex.z-dn.net/?f=%5Cmu%20%3D1.846%20%5Ctimes%2010%5E%7B-5%7D%20Pa-s)
![\rho =1.77 kg/m^3](https://tex.z-dn.net/?f=%5Crho%20%3D1.77%20kg%2Fm%5E3)
And reynold's number is given by
![Re.=\frac{\rho v\time x}{\mu }](https://tex.z-dn.net/?f=Re.%3D%5Cfrac%7B%5Crho%20v%5Ctime%20x%7D%7B%5Cmu%20%7D)
![5\times 10^5=\frac{1.77\times 1.5\times x}{1.846\times 10^{-5}}](https://tex.z-dn.net/?f=5%5Ctimes%2010%5E5%3D%5Cfrac%7B1.77%5Ctimes%201.5%5Ctimes%20x%7D%7B1.846%5Ctimes%2010%5E%7B-5%7D%7D)
![x=\frac{5\times 10^5\times 1.846\times 10^{-5}}{1.77\times 1.5}](https://tex.z-dn.net/?f=x%3D%5Cfrac%7B5%5Ctimes%2010%5E5%5Ctimes%201.846%5Ctimes%2010%5E%7B-5%7D%7D%7B1.77%5Ctimes%201.5%7D)
x=3.47 m
Explanation:
A.
H = Aeσ^4
Using the stefan Boltzmann law
When we differentiate
dH/dT = 4AeσT³
dH/dT = 4(0.15)(0.9)(5.67)(10^-8)(650)³
= 8.4085
Exact error = 8.4085x20
= 168.17
H(650) = 0.15(0.9)(5.67)(10^-8)(650)⁴
= 1366.376watts
B.
Verifying values
H(T+ΔT) = 0.15(0.9)(5.67)(10)^-8(670)⁴
= 1542.468
H(T+ΔT) = 0.15(0.9)(5.67)(10^-8)(630)⁴
= 1205.8104
Error = 1542.468-1205.8104/2
= 168.329
ΔT = 40
H(T+ΔT) = 0.15(0.9)(5.67)(10)^-8(690)⁴
= 1735.05
H(T-ΔT) = 0.15(0.9)(5.67)(10^-8)(610)⁴
= 1735.05-1059.83/2
= 675.22/2
= 337.61
Answer:
A.
Explanation:
Individual footings are the commonest, and they are often used if the load of the building is borne by columns. Typically, every column will have an own footing. The footing is usually only a rectangular or square pad of concrete on which the column is erected
The project is going to scope if the situation happens. Option A is correct.
<h3 /><h3>What is the function of a project manager?</h3>
Project managers are in charge of organizing, planning, and guiding the execution of certain projects for an organization .
As the project manager, you grant a team member's request to rearrange their work in a way they believe will increase productivity.
However, this modification interferes with another team member's workflow since they now have to complete two more activities that are unrelated to the project's objective. The project will be within its scope.
Hence option A is correct.
To learn more about the project manager refer;
brainly.com/question/15404120
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