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IrinaVladis [17]
3 years ago
10

In which situation is no work considered to be done by a force?

Physics
1 answer:
Ber [7]3 years ago
7 0

Answer:

O B. when the angle between the force and displacement is 90°

Explanation:

<h3>work defined as   w = f cos Ф * d. </h3><h3>work  can only be done if object moves(displacement) in the direction of force. now a quick one. if you since the varrious angles into the cosine, you would see that Cos 90 will give zero which implies that no work is done. Again, angle means it is perpendicular and so it is not in the direction of force.</h3>
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Answer:

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Explanation:

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The thermal energy, Q is given by the following equation;

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Given that the graduated cylinder with more water has more mass and therefore, more water molecules, than the cylinder with less water, the cylinder with more water has more thermal energy.

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