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shepuryov [24]
3 years ago
15

Which of the following energy sources is expected to have the highest rate of consumption in 2030?

Physics
2 answers:
strojnjashka [21]3 years ago
8 0
<u>Answer</u>
<span>d. renewable energy
</span>
<u>Explanation</u>
Energy can be said to be one of the most basic commodity in the 21st century. Every household uses energy in almost all its doing eg. cooking lighting, cleaning, entertainment such televisions and radios, communication etc. 
For this reason, the scientist have to find the most sustainable source of energy. Some are not sustainable as they can be used up and other pollute the environment. 
By the year 2030, the most expected source of energy to have the highest rate of consumption is renewable energy. 
viva [34]3 years ago
8 0

just took the test answer is a.coal on e2020 and edge Explanation:

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Calculate the potential energy at the top of the giant drop if the car weights 1000 kg
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Atoms that have a positive charge will be attracted to atoms with a
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negative

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A cannon is fired straight up into the air. If the cannon ball comes back down to the launch point in 5 seconds, what was the ma
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Answer:

30.63 m

Explanation:

From the question given above, the following data were obtained:

Total time (T) spent by the ball in air = 5 s

Maximum height (h) =.?

Next, we shall determine the time taken to reach the maximum height. This can be obtained as follow:

Total time (T) spent by the ball in air = 5 s

Time (t) taken to reach the maximum height =.?

T = 2t

5 = 2t

Divide both side by 2

t = 5/2

t = 2.5 s

Thus, the time (t) taken to reach the maximum height is 2.5 s

Finally, we shall determine the maximum height reached by the ball as follow:

Time (t) taken to reach the maximum height = 2.5 s

Acceleration due to gravity (g) = 9.8 m/s²

Maximum height (h) =.?

h = ½gt²

h = ½ × 9.8 × 2.5²

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3 0
3 years ago
A 5kg block is pulled across a table by a horizontal force of 40 N with a frictional force of 8 N opposing the motion. Draw a fo
Taya2010 [7]

Answer:

Net force on the block is 32 N.

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Explanation:

Let the acceleration of the object be a m/s².

Given:

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Force of pull is, F=40\ N

Frictional force on the block is, f=8\ N

The free body diagram of the object is shown below.

From the figure, the net force in the forward direction is given as:

F_{net}=F-f=40-8=32\ N

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F_{net}=ma\\32=5a\\a=\frac{32}{5}=6.4\ m/s^2

Therefore, the acceleration of the object in the forward direction is 6.4 m/s².

3 0
3 years ago
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