

Solids have a definite shape and volume. Liquids have a definite volume, but take the shape of the container. Gases have no definite shape or volume.
Solids have a fixed shape and a fixed size. The particles are very close together and held in place by strong forces (bonds). Their particles cannot move around, but they do vibrate. Because the particles cannot move around, a solid has a fixed shape.
Solids can be hard like a rock, soft like fur, a big rock like an asteroid, or small rocks like grains of sand. The key is that solids hold their shape and they don't flow like a liquid.

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Right answer: 64 units</h2><h2>
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According to the law of universal gravitation, which is a classical physical law that describes the gravitational interaction between different bodies with mass:

Where:
is the module of the force exerted between both bodies
is the universal gravitation constant.
and
are the masses of both bodies.
is the distance between both bodies
In this case we have a gravitation force
, given by the formula written at the beginning. Let’s rename the distance
as
:
(1)
And we are asked to find the gravitation force
with a given distance of
:
(2)
The gravity constant is the same for both equations, and we are assuming both masses are constants, as well. So, let’s isolate
in both equations:
From (1):
(3)
From (2):
(4)
If (3)=(4):
(5)
Now we have to find
:
(6)
If
:
>>>>This is the new force of attraction
They do because if one thing is moving and the is there both moveing in once