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svet-max [94.6K]
3 years ago
5

What is Hydroelectric energy used for? Use in your own words.

Physics
1 answer:
evablogger [386]3 years ago
4 0
Hydroelectric energy, also called hydroelectric power or hydroelectricity, is a form of energy that harnesses the power of water in motion—such as water flowing over a waterfall—to generate electricity. People have used this force for millennia. Over two thousand years ago, people in Greece used flowing water to turn the wheel of their mill to ground wheat into flour.
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Answer:

Explained

Explanation:

Resistance R in a current flow through an object is given by

R= \frac{\rho L}{A}

ρ = resistivity of the material

L= length of the object

A=  area of cross section

clearly resistance is directly dependent on length of the object.This means greater the length larger will be resistance to current.

thermal resistance R_th is given by

R_{th} = \frac{L}{KA}

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thermal resistance is also is directly dependent on length of the object.This means greater the length larger will be resistance to current.

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3 years ago
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beks73 [17]

Maybe this would help understand it better.

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4 0
2 years ago
What do we have seasons on earth
Goryan [66]

Because the Earth's axis is not "straight up and down" as we move
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So when we're on one side of the sun, the top pole leans slightly toward
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Then, when we're on the other side of the sun, the top pole leans slightly
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The Earth makes the complete trip around the sun in one year, so the
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8 0
3 years ago
Which choice names the two parts of Earth that make up the lithosphere?
SIZIF [17.4K]
The lithosphere includes the crust, and the mantle :)
6 0
3 years ago
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Is the force of friction the sum of all the microscopic contact forces between the bottom of the block and the surface?
kotegsom [21]

The force of friction is that force that tends to oppose the motion of the body with the surface in contact... are you clear with it?

6 0
2 years ago
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