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Hello! :)</h2>
Answer:
In wind turbines, the blades rotate due to the wind.
Explanation:
In wind turbines, the blades rotate due to the wind.<u> While the blade rotates the generator connected to it also rotates.</u> Thus the <u>kinetic energy from the wind initiates the electric generator which in turn produces the electricity.</u>
Thus the<u> kinetic energy of the wind is converted to electricity.</u>
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Hope this helps!
Have a Wonderful Friday!
-Good Luck on your Homework- :)
Answer:
Object should be placed at a distance, u = 7.8 cm
Given:
focal length of convex lens, F = 16.5 cm
magnification, m = 1.90
Solution:
Magnification of lens, m = -
where
u = object distance
v = image distance
Now,
1.90 = 
v = - 1.90u
To calculate the object distance, u by lens maker formula given by:
u = 7.8 cm
Object should be placed at a distance of 7.8 cm on the axis of the lens to get virtual and enlarged image.
The charge? If you mean valance electrons, the answer is 8. All compounds must be equal to that of a noble gas.
I would google "Earth Science textbook free online" and see what you get.
Good luck!
Hope this helps~!
~{Oh Mrs.Believer}