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3 years ago

Which of the following energy sources is expected to have the least growth in the next 20 years?

Physics

2 answers:

ruslelena [56]3 years ago

7 0

Answer:

hydroelectric

Explanation:

i checked and read and lots of people said "coal" but then others said NOT COAL so i guessed and it was right

Rama09 [41]3 years ago

6 0

Answer;

A. hydroelectricity

Explanation;

A nonrenewable resource is a resource of economic value that cannot be readily replaced by natural means on a level equal to its consumption. Most fossil fuels, such as oil, natural gas and coal are considered nonrenewable resources in that their use is not sustainable because their formation takes billions of years.

-Renewable resources are resources which are being continuously consumed by man but are renewed by nature constantly are called as Renewable Resources. These resources are inexhaustible because they cannot be exhausted permanently. Some examples of renewable energy sources are solar energy, wind energy, hydropower, geothermal energy, and biomass energy.

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How high is a 3 kg object that has 3000 j of potential energy

Mila [183]

Using the formula $z=\frac{E}{m*g}$

$z=\frac{3000}{3*9.80665}$

$z=101.97$ meters

8 0

3 years ago

What force is required to move 7 M if the work done is 9 J

Murrr4er [49]

Answer:

1.29 N

Explanation:

The equation for force (with work and distance) is:

$Force=\frac{Work}{distance}$

We can plug in the given values into the equation:

$Force=\frac{9J}{7m}$\approx1.29 N$

5 0

2 years ago

Read 2 more answers

So long as there are(is) ______ there is no movement.

patriot [66]

Answer:

answer is friction. MCQ A is answer

6 0

3 years ago

A man holds a child on his shoulders while watching a football match. How many work has he done if the game lasts for 2 hours?

Shalnov [3]

very interesting and amazing question u had asked but i get it...

Answer

work done is given by

W = Force × Displacement

but in above case force is exerted on the men as the weight of the child × gravitational pull of earth (9.8 m/s^2) but the displacement or movement is ZERO
there for W= F×0 =0
so even after carrying child for 2 hours work done by the men will be zero

More examples

a person standing straight and lifting weight
a person carry some weight and walk in a circular path and came back to its original position.........in this case also Displacement will be zero

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hope it helped u buddy

4 0

3 years ago

Read 2 more answers

The base si unit for electric is the

nevsk [136]

The basic SI unit that has anything to do with electricity is the unit
of electric charge ... the Coulomb.

Every other unit connected with electricity is a combination of the
Coulomb and the other basic SI units ...kilogram for mass, the meter
for length, and the second for time.

6 0

3 years ago