Answer:
Drop by a factor of 64
Explanation:
By Newtons law of gravity,
where;
G = Universal gravitaional constant
r = distance between center of gravities of two objects
m₁,m₂ = masses of thee objects.
F = Gravitational force.
m = 
(mass = volume into density.
So when radius is halved, mass drops by a factor of 8,
m' = 
= 
So in substitution to the equation,
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Answer:
I believe it is A. The human body would not function normally without essential body fat.
Explanation:
If a hot air balloon has shown rising above the top of a hill, the top of the hill is considered as a reference point.
<h2>
Reference Point:</h2>
It is a point that is used to standardize a experiment. The reference point is a constant point.
In the given problem:
- The hot air balloon is rising above the top of the hill. Here, the hill is a standard point that has a fixed (constant) height.
- Some other reference points are the top of the Eifel Tower or a famous shop which a person use to denote a certain distance.
Therefore, "If a hot air balloon has shown rising above the top of a hill" the top of the hill is considered as a reference point.
Learn more about Reference Point:
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