Physics!!! Please help!!!!!!!

Physics

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Marianna [84]3 years ago

8 0

Answer:

it is a very good morning amor de g the first paragraph of the first paragraph of the first paragraph of the first paragraph of the first paragraph of the first paragraph of 88th paragraph of the first paragraph

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The Force of friction between an object and the surface upon which it is sliding is 12N. The weight of the object is 20N. What i

shtirl [24]

Answer: The coefficient of kinetic friction is μ = 0.6

Explanation:

For an object of mass M, the weight is:

W = M*g

where g is the gravitational acceleration: g = 9.8m/s^2

And the friction force between this object and the surface can be written as:

F = W*μ

where μ is the coefficient of friction (kinetic if the object is moving, and static if the object is not moving, usually the static coefficient is larger)

In this case, the weight is:

W = 20N

And the friction force is:

F = 12N

Replacing these values in the equation for the friction force we get:

12N = 20N*μ

(12N/20N) = μ = 0.6

The coefficient of kinetic friction is μ = 0.6

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3 years ago

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When alpha particles are sent through a thin metal foil, most of them go straight through the foil because *

Dominik [7]

Answer:

Most part of the atom is empty space

Explanation:

Looking at the options, the correct one is that most of the inner parts of the atom is empty. This is because the atom is hollow and there is no obstruction on the way of the alpha particles. Thus, there

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A car is parked on a cliff overlooking the ocean on an incline that makes an angle of 24.0° below the horizontal. The negligent

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The position is $P = 47.4 \ m$ relative to the base of the ocean