kartikjain2002ozi29y
23.08.2019 •
Physics
Hydroelectric energy is electricity generated from
a. earth’s heat
b. the sun
c. moving water
d. wind
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Ответ:
You would figure this out by knowing what the root hydro is. Hydro means water. So then you could infer that Hydroelectric energy is from moving water.
Ответ:
The image is virtual
Explanation;When using the lens equation, a negative value as the solution for di indicates that the image is virtual.A real image is an image that can be formed on a white screen, while a virtual image is an image that can not be formed on a screen.The lens equation gives the magnification of a given lens and depends on the image distance and the height of the image formed.When the image distances is positive, it means the image and the object are on the same side and thus the image is real and inverted while when the image distance is negative it means the image is behind the lens, and thus the image is real and upright.