2 years ago

Moving current has electrical energy.

Physics

1 answer:

Inessa [10]2 years ago

5 0

Yes, that’s true it has electrical energy

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The Height of a pyramid is 4r.

Explanation:

Explanation is in the following attachments

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A 25kg chair initially at rest on a horizontal floor requires a 165 N horizontal force to set it in motion. Once the chair is in

SCORPION-xisa [38]

Answer:

$\mu_k=0.51$

Explanation:

Given that

Mass , m = 25 kg

We know that when body is in rest condition then static friction force act on the body and when body is in motion the kinetic friction force act on the body .That is why these two forces are given as follows

Static friction force ,fs= 165 N

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If the body is moving with constant velocity ,it means that acceleration of that body is zero and all the forces are balanced.

Lets take coefficient of kinetic friction = μk

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fk = μk m g

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127 = μk x 25 x 9.81

$\mu_k=\dfrac{127}{25\times 9.81}$

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Therefore the value of coefficient of kinetic friction will be 0.51

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Which statement best describes the law of conservation of energy?

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