Galaxy-a collection of dust, gas, AND STARS. But I'm pretty positive this should be the answer.
<span>It bounces back toward a single spot. This is how the focusing mirrors on headlights work</span>
F~1/r²
doubling the distance r, Decreases the force by ¼
Answer:
The pressure is 
Explanation:
From the question we are told that
The volume of the container is 
The mass of
is
The root-mean-square velocity is 
The root -mean square velocity is mathematically represented as

Now the ideal gas law is mathematically represented as

=> 
Where n is the number of moles which is mathematically represented as

Where M is the molar mass of
So

=> 
=> 
=> 
substituting values
=> 
=> 