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MariettaO [177]
2 years ago
14

ASAP please!!! Brainiest if correct!

Biology
1 answer:
tresset_1 [31]2 years ago
6 0

Answer: radiant, chemical, mechanical, chemical, radiant

Explanation:

Sunlight - electromagnetic energy (radiant)

life - chemical energy

compression - chemical and mechanical energy

retrieve coal - mechanical

burning - chemical, radiant

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The complete question is :

Charlie is investigating friction. She will use the same amount of force to push two wooden balls across two level surfaces. Then she will record her results in the table below.

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The distance for Trial 3 will be greater than the distance for Trial 4 because the difference in surface roughness will affect friction.

Explanation:

The frictional force depends greatly on the roughness of the body surfaces. It acts opposite to the direction of motion when two body surfaces have a relative motion between them.

In the context, equal mount of force is applied to push the wooden balls. So the net force which acts on the balls are :

F' = F - f

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And f = μ.N (N = reaction force)

Here μ is the coefficient of friction that depends on the surface roughness. The frictional force will be less when the surfaces are smooth. Thus for the trails 3 and trial 4, the distance for trail 3 would be greater than trail 4 as the surface is polished and would offer less friction.

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