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tankabanditka [31]
3 years ago
8

Which describes why people on earth can see light from the stars in the sky that are so far away?

Physics
1 answer:
mina [271]3 years ago
3 0
You are correct.  It is D.  Don't make me copy it.
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Give a turn signal for at least the last __________ feet before you make your turn to let other drivers know what you are going
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How do we find the average force in physics?​
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Force is equal to mass multiplied by acceleration. Hope this helps!
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Two massive objects are fixed in position. A third object is placed directly between the first two at the position at which the
ivanzaharov [21]

Answer:

Explanation:

Be M1 and M2 the two massive objects and m the third one

The gravitational force over the third object at the beginning is zero (assuming that the position of the third object is x=0)

F_{m}=-G\frac{mM_{1}}{x_{1}^{2}}-G\frac{mM_{2}}{x_{2}^{2}}=0

when the third object is displaced we have that the new position is x=Δx. Hence

F_{m}=-G\frac{mM_{1}}{(-x_{1}+\Delta x)^{2}}-G\frac{mM_{2}}{(x_{2}-\Delta x)^{2}}

I attached a scheme of the system

I hope this is useful for you

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5 0
3 years ago
What happens to the gravitational force between two objects if:
rewona [7]

Answer:

A. The force of attraction will also increase i.e double.

B. The force of attraction will increase by a multiple of 4.

C. The force of attraction will decrease by a factor of 4

Explanation:

We'll begin by writing the formula for calculating the gravitational force between two objects. This is given below:

F = GM₁M₂/r²

Where:

F: is the force of attraction between the two objects.

G: is the gravitational constant.

M₁ and M₂: are the masses of the two objects.

r: is the distance between two objects.

F = GM₁M₂/r²

From the formula, we can say that:

The force (F) of the attraction between the two objects is directly proportional to the masses (M₁ and M₂) of the objects and inversely proportional to the square of the distance between (r) the two objects.

A. Determination of the force of attraction when the mass of one is doubled.

Since the force (F) is directly proportional to the the masses (M₁ and M₂) of the objects, if the mass of one is double, the force of attraction will also increase i.e double.

B. Determination of the force of attraction when the masses of both is doubled.

Since the force (F) is directly proportional to the the masses (M₁ and M₂) of the objects, if the masses of both is double, the force of attraction will also increase by a multiple of 4.

C. Determination of the force of attraction between the distance between them is doubled.

Since the force (F) of the attraction between the two objects is inversely proportional to the square of the distance between (r) the two objects. If the distance between them is doubled, the force of attraction will decrease by a factor of 4

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What is held together by intermolecular forces?
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Answer:1

Explanation:

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