Answer:
No force is more familiar than gravity — it’s what keeps our feet on the ground, after all. And Einstein’s theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.
Explanation:
These answers aren´t valid .
The correct answer will be:
Planetary system.
Answer:
18 m
Explanation:
G = Gravitational constant
m = Mass of planet = 
= Density of planet
V = Volume of planet assuming it is a sphere = 
r = Radius of planet
Acceleration due to gravity on a planet is given by

So,

Density of other planet = 
Radius of other planet = 

Since the person is jumping up the acceleration due to gravity will be negative.
From kinematic equations we have

On the other planet

The man can jump a height of 18 m on the other planet.
The frequencies of light that an atom can emit are dependent on states the electrons can be in. When excited, an electron moves to a higher energy level or orbital. When the electron falls back to its ground level the light is emitted.
hope this helped:)
mark brainliest
Answer:
An example of a mixture would be salt water