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3 years ago

Why are force fields necessary to describe gravity?

Physics

2 answers:

artcher [175]3 years ago

8 0

Gravity is a non-contact force.

Vadim26 [7]3 years ago

5 0

Answer:

D. gravity is a non-contact force

Explanation:

Gravitational force acts between two bodies having mass. The force is attractive in nature and is independent of the mass of the bodies. Thus, gravity can pull objects towards each other.

The magnitude of this force depends on the mass of the two bodies and inversely proportional to the square of the distance between them.

It is a non-contact force. So, to describe gravity, force fields are necessary. Force fields are used to describe non-contact forces- force on any body at any point in space.

Thus, correct option is D.

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At a rock concert, the sound intensity 1.0 m in front of the bank of loudspeakers is 0.10 W/m2. A fan is 30 m from the loudspeak

aliina [53]

Explanation:

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3 years ago

how would the velocity of the book change if the applied force were equal to the sliding friction force

Inessa [10]

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3 years ago

The Earth's gravity keeps us from flying out to space. How can you explain that we have a stronger gravitational attraction to t

julia-pushkina [17]

It's the fourth choice.

This is because, since we are closer to the Earth, the Earth will have a stronger gravitational pull on us since again, we are closer.
That also explains tides, but that's just getting off topic. Hope I helped.

6 0

2 years ago

Read 2 more answers

Metal sphere A has a charge of − Q . −Q. An identical metal sphere B has a charge of + 2 Q . +2Q. The magnitude of the electric

Goshia [24]

Complete Question:

Metal sphere A has a charge of − Q . −Q. An identical metal sphere B has a charge of + 2 Q . +2Q. The magnitude of the electric force on sphere B due to sphere A is F . F. The magnitude of the electric force on sphere A due to sphere B must be:

A. 2F

B. F/4

C. F/2

D. F

E. 4F

Answer:

Explanation:

If both spheres can be treated as point charges, they must obey the Coulomb's law, that can be written as follows (in magnitude):

$F =\frac{kQ*2Q}{r^{2} }$

As it can be seen, this force is proportional to the product of the charges, so it must be the same for both charges.

As this force obeys also the Newton's 3rd Law, we conclude that the magnitude of the electric force on sphere A due to sphere B, must be equal to the the magnitude of the force on the sphere B due to the sphere A, i.e., just F.

3 0

3 years ago

The greater the pull of gravity on an object, the greater the what of that object

Nikitich [7]

Answer:

weight

Explanation:

" the greater the pull of gravity on an object, the greater the weight of that object." In physics, weight is measured in newtons (N), the common unit for measuring force.

3 0

2 years ago