Answer:
Energy is the tendency to do work.
Explanation:
Energy unit is Joule
1 Joule means 1 kgm²/s²
Energy =Kinertic energy
=1/2 mv²
unit= kgm²/s²
So energy unit is derived unit.
Well ice would be less dense, as water freezes it expands which would reduce density and you can tell just by putting ice cubes in water
Answer:
Explanation:
Let consider that pipe is a horizontal cylinder. The Nusselt number is equal to:
![Nu = \left\{0.6+\frac{0.387\cdot Ra_{D}^{\frac{1}{6} }}{[1+\left(\frac{0.559}{Pr} \right)^{\frac{9}{16}} ]^{\frac{8}{27} }} \right\}^{2}](https://tex.z-dn.net/?f=Nu%20%3D%20%5Cleft%5C%7B0.6%2B%5Cfrac%7B0.387%5Ccdot%20Ra_%7BD%7D%5E%7B%5Cfrac%7B1%7D%7B6%7D%20%7D%7D%7B%5B1%2B%5Cleft%28%5Cfrac%7B0.559%7D%7BPr%7D%20%20%5Cright%29%5E%7B%5Cfrac%7B9%7D%7B16%7D%7D%20%5D%5E%7B%5Cfrac%7B8%7D%7B27%7D%20%7D%7D%20%20%5Cright%5C%7D%5E%7B2%7D)
, for 
.
Where 
is the Rayleigh number associated with the cylinder.
The Rayleigh number is:
By assuming that air behaves ideally, the coefficient of volume expansion is:
The cinematic and dynamic viscosities, thermal conductivity and isobaric specific heat of air at 10 °C and 1 atm are:
The Prandtl number is:
Likewise, the Rayleigh number is:
Finally, the Nusselt number is:
![Nu = \left\{0.6+\frac{0.387\cdot (12.486\times 10^{6})^{\frac{1}{6} }}{\left[1 + \left(\frac{0.559}{0.733}\right)^{\frac{9}{16} }\right]^{\frac{8}{27} }} \right\}^{2}](https://tex.z-dn.net/?f=Nu%20%3D%20%5Cleft%5C%7B0.6%2B%5Cfrac%7B0.387%5Ccdot%20%2812.486%5Ctimes%2010%5E%7B6%7D%29%5E%7B%5Cfrac%7B1%7D%7B6%7D%20%7D%7D%7B%5Cleft%5B1%20%2B%20%5Cleft%28%5Cfrac%7B0.559%7D%7B0.733%7D%5Cright%29%5E%7B%5Cfrac%7B9%7D%7B16%7D%20%7D%5Cright%5D%5E%7B%5Cfrac%7B8%7D%7B27%7D%20%7D%7D%20%20%5Cright%5C%7D%5E%7B2%7D)
I think the answer to this question is A because she acts differently from the other children
Answer:
e. design programming
Explanation:
The planning techniques are responsible for structuring the tasks to be performed within the project, defining the duration and the order of execution of the same, while the programming techniques try to organize the activities so that the logical temporal relationships between them, determining the calendar or the moments of time in which each one must be realized. The programming must be consistent with the objectives pursued and respect existing restrictions (resources, costs, workloads).
The programming therefore consists in setting, in an approximate way, the moments of beginning and termination of each activity. Some activities may have slack and others are critical activities (fixed over time).
STEPS:
Build a time diagram (moments of beginning and slack of activities).
Establish the times of each activity.
Analyze project costs and adjust clearances (minimum cost project).
