Electricity from hydropower composes approximately 6.5 % of the total electricity produced in the United States.
A dam or other construction that alters the natural flow of a river or other body of water is used to generate hydropower, often known as hydroelectric power.
One of the world's first forms of energy, hydropower produces power when moving water spins a turbine or wheel. As far back as ancient Greece, farmers utilized it for mechanical activities like grinding grain. Additionally a renewable energy source, hydropower doesn't emit any hazardous byproducts or pollute the environment. Discover more about the development of hydropower.
Learn more about hydropower here:
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Answer:
because there might be changes in the future which could make the estimates unreliable for example war or decline in economy
Explanation:
<span>During the stage of internal combustion engine operation in which the piston rises and compresses the fuel in the combustion chamber, the intake and exhaust valves will both be closed. This means that the mixture of fuel and air are compressed, due to the seal around the combustion chamber that has been created by the closure of both of these valves. Hopefully that answered your question for you!</span>
Answer:
For the ones that say use calculator try it. Just pop it in and you get your answer :D
Explanation:
rounding
a. 6.54 = 6.5
if the number is 5 or above round up and drop the numbers to the right of it
if its 4 or under drop the numbers to the right of it
in this case your tenth place is 5 so you drop the four.
follow this formula for the rest
