Both the electrical force and the gravitational force between two objects share which relationship?

a. they are directly proportional to mass.
b. they are inversely proportional to the square of the distance.
c. they are inversely proportional to charge.
d. they are directly proportional to the square of the distance.

B. They are inversely proportional to the square of the distance.

Explanation:

The gravitational force between two objects is given by:

where

G is the gravitational constant

m1, m2 are the masses of the two objects

r is the distance between the two objects

While the electrical force is given by

where

k is the Coulomb's constant

q1, q2 are the charges of the two objects

r is the distance between the two objects

As we see from the two equations, both forces are inversely proportional to the square of the distance, so the correct option is

B. They are inversely proportional to the square of the distance.

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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