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m_a_m_a [10]
3 years ago
10

9. What are the top three fossil fuels used for

Biology
1 answer:
Tcecarenko [31]3 years ago
7 0

Answer:

D.

Explanation:

Usage-

Oil (Petroleum) - 38%

Coal - 24%

Natural Gas - 23%

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Which prediction will most likely describe how friction will affect her findings? The distance for Trial 3 will be greater than
Juliette [100K]

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.

Which prediction will most likely describe how friction will affect her findings?

Answer:

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

Here, F = the force applied

         f = force of friction

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.

8 0
2 years ago
Naturally occurring methods of recombining DNA within a species to increase variation include all BUT
WITCHER [35]
My Answer: DNA cloning.

Hope I helped! :D
7 0
3 years ago
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Converts food into energy. it is found in both plant cells and animal cells
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The mitochondria converts food into energy
5 0
3 years ago
1. results in no motion of the object because forces are equal and in opposite directions
sammy [17]

Answer:

Balanced Forces

Explanation:

When the forces acting on an object have equal strength and act in opposite directions, they are balanced.When the forces acting on an object are unbalanced, they do not cancel out one another.

8 0
3 years ago
his geologic era is known as the age of aquatic plants and animals. a. Precambrian b. Mesozoic c. Cenozoic d. Paleozoi
german

Answer:d.Paleozoic Era

Explanation:

Paleozoic Era is hallmarked by climate, animals & plants.

This Era includes the Ordovician Period, Silurian Period and the Devonian Period.

The Silurian Period is one during this era where aquatic plants and animals evolved.

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3 years ago
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