Answer:
<em>No, the velocity profile does not change in the flow direction.</em>
Explanation:
In a fluid flow in a circular pipe, the boundary layer thickness increases in the direction of flow, until it reaches the center of the pipe, and fill the whole pipe. If the density, and other properties of the fluid does not change either by heating or cooling of the pipe, <em>then the velocity profile downstream becomes fully developed, and constant, and does not change in the direction of flow.</em>
Answer:
Explanation:
<u><em>General Considerations</em></u>
The design of the yard will affect the natural surface and subsurface drainage pattern of a watershed or individual hillslope. Yard drainage design has as its basic objective the reduction or elimination of energy generated by flowing water. The destructive power of flowing water increases exponentially as its velocity increases. Therefore, water must not be allowed to develop sufficient volume or velocity so as to cause excessive wear along ditches, below culverts, or along exposed running surfaces, cuts, or fills.
A yard drainage system must satisfy two main criteria if it is to be effective throughout its design life:
1. It must allow for a minimum of disturbance of the natural drainage pattern.
2.It must drain surface and subsurface water away from the roadway and dissipate it in a way that prevents excessive collection of water in unstable areas and subsequent downstream erosion
The diagram below ilustrate diffrent sturcture of yard to be consider before planing to utiliza rainwater
Correcto no se muy bien de que se trata el tema porque está en inglés.
Sorry
Answer:
a)
, b) Yes.
Explanation:
a) The maximum thermal efficiency is given by the Carnot's Cycle, whose formula is:
![\eta_{th} =\left(1-\frac{253.15\,K}{284.15\,K} \right) \times 100\,\%](https://tex.z-dn.net/?f=%5Ceta_%7Bth%7D%20%3D%5Cleft%281-%5Cfrac%7B253.15%5C%2CK%7D%7B284.15%5C%2CK%7D%20%20%5Cright%29%20%5Ctimes%20100%5C%2C%5C%25)
![\eta_{th} = 10.910\,\%](https://tex.z-dn.net/?f=%5Ceta_%7Bth%7D%20%3D%2010.910%5C%2C%5C%25)
b) The claim of the inventor is possible since real efficiency is lower than maximum thermal efficiency.