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Harman [31]
3 years ago
15

What percentage of the world's energy needs is supplied by fossil fuels?

Physics
1 answer:
bagirrra123 [75]3 years ago
5 0
13.4 %

Hope this helped
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In a controlled experiment, which variable does the investigator change?
Bas_tet [7]

Answer:

The manipulated variable is also known as the independent variable

Explanation:

When remembering this remember independent as in you independently change the outcome

7 0
3 years ago
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If a system has 475 kcal of work done to it, and releases 5.00 × 102 kJ of heat into its surroundings, what is the change in int
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First, we convert kcal to joules:
1 kcal = 4.184 kJ
475 kcal = 1987.4 kJ

Now, calculating the change in internal energy:

ΔU = Q + W; where Q is the heat supplied to the system and W is the work done on the system.

ΔU = -500 + 1987.4
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The radius of the earth is 6378 km. What is the diameter of the earth in meters?
Nesterboy [21]
To determine the diameter of the earth in metres first multiply the original value by 2.

6378 X 2 = 12 756 km.

Then convert km - m

1 km = 1000 m
12 756 km = ? m

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The final solution for the diameter is 1.2756 X 10 ^ 7 m.
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Which statement is true for a sound wave entering an area of warmer air?
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Characteristics of deposition?
goldenfox [79]

Answer:

<em>I hope this helps with your question. :)</em>

Explanation:

<em>Deposition is a process in which rocks, soil, and sediments are transported and added to a certain location to form a landmass. The deposits can be carried via "wind, water, or ice" ("Deposition of Sediment"). Deposition in rivers, oceans, and glaciers certainly can form a number of different landmasses.</em>

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