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Tema [17]
3 years ago
9

How can doing work on an object increase its kinetic energy?

Physics
1 answer:
Lyrx [107]3 years ago
6 0

Answer:If the object's speed increases.

Explanation:

If the object's speed increases, then its kinetic energy will increase. If the kinetic energy increases, the change in kinetic energy will be positive.

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What force is left out of the Quantum Mechanics theory?
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A force, F1, of magnitude 2.0 N and directed due east is exerted on an object. A second force exerted on the object is F2 = 2.0
IgorLugansk [536]

Answer:

Magnitude of the force is

F_3 = 2.83

direction of the force is given as

\theta = 45 degree West of South

Explanation:

As we know that force is a vector quantity and in order to find the resultant of two or more forces we need to add them vectorialy

So here we have

\vec F_1 + \vec F_2 + \vec F_3 = 0

here we know that first force is of magnitude 2 N towards east

\vec F_1 = 2 \hat i N

second force is also of 2.0 N due North

\vec F_2 = 2 \hat j

now from above equation

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so magnitude of the force is given as

F_3 = \sqrt{2^2 + 2^2}

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\theta = tan^{-1}\frac{-2}{-2}

\theta = 45 degree West of South

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