Answer:
L’énergie solaire récolte l’énergie radiante portée par la lumière de notre soleil en la convertissant en électricité.Biomasse des plantes. Les plantes sont capables d’exploiter et d’utiliser l’énergie lumineuse dans un processus appelé photosynthèse.
Answer:
0.08 ft/min
Explanation:
To get the speed at witch the water raising at a given point we need to know the area it needs to fill at that point in the trough (the longitudinal section), which is given by the height at that point.
So we need to get the lenght of the sides for a height of 1 foot. Given the geometry of the trough, one side is the depth <em>d</em> and the other (lets call it <em>l</em>) is given by:
![l=\frac{3-2}{2}\,ft+2\,ft\\l=2.5\,ft](https://tex.z-dn.net/?f=l%3D%5Cfrac%7B3-2%7D%7B2%7D%5C%2Cft%2B2%5C%2Cft%5C%5Cl%3D2.5%5C%2Cft)
since the difference between the upper and lower base is the increase in the base and we are only at halft the height.
Now we can calculate the longitudinal section <em>A</em> at that point:
![A=d\times l\\A=5\,ft \times 2.5\, ft\\A=12.5\, ft^{2}](https://tex.z-dn.net/?f=A%3Dd%5Ctimes%20l%5C%5CA%3D5%5C%2Cft%20%5Ctimes%202.5%5C%2C%20ft%5C%5CA%3D12.5%5C%2C%20ft%5E%7B2%7D)
And the raising speed <em>v </em>of the water is given by:
![v=\frac{q}{A}\\v=\frac{1\, \frac{ft^3}{min}}{12.5\, ft^2}\\v=0.08\, \frac{ft}{min}](https://tex.z-dn.net/?f=v%3D%5Cfrac%7Bq%7D%7BA%7D%5C%5Cv%3D%5Cfrac%7B1%5C%2C%20%5Cfrac%7Bft%5E3%7D%7Bmin%7D%7D%7B12.5%5C%2C%20ft%5E2%7D%5C%5Cv%3D0.08%5C%2C%20%5Cfrac%7Bft%7D%7Bmin%7D)
where <em>q</em> is the water flow (1 cubic foot per minute).
<span>When an individual looks through a filtered telescope in which he or she observes the sun, the portion where it appears blotchy is likely to be called the sunspots while the layer of the sun where it shows where it occurs is called the photosphere.</span>
Answer:
the third one is incorrect
Explanation:
10 x 10³= 10^1 x 10^3 = 10^4