if a volume of air is warmed it expands due to increased translational kinetic energy as it expands it will start to cool. 
<h3>When does temperature increase volume?</h3>
We can then conclude that at constant pressure, temperature and volume are directly proportional: temperature increases, volume increases; decrease temperature, decrease volume.
In this case, the higher the temperature, the greater the kinetic energy that acts on the molecules of this gas, so when the gas expands, these molecules find more space and collide less, which will cause the gas to cool.
See more about volume at brainly.com/question/1578538
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Answer:

Explanation:
As we know that the formula of range is given as

now we know that
maximum value of the range of the projectile is given as

now we need to find such angles for which the range is half the maximum value
so we will have




 
        
             
        
        
        
Well, if your question is how light affects plants,
then you would want to design an experiment that plays aruond with the amount of light a plant gets
thus the thing changing (or variable) would be amount of light
        
             
        
        
        
Answer:
Approximately  (given that the magnitude of this charge is
 (given that the magnitude of this charge is  .)
.)
Explanation:
If a charge of magnitude  is placed in an electric field of magnitude
 is placed in an electric field of magnitude  , the magnitude of the electrostatic force on that charge would be
, the magnitude of the electrostatic force on that charge would be  .
.
The magnitude of this charge is  . Apply the unit conversion
. Apply the unit conversion  :
:
 .
.
An electric field of magnitude  would exert on this charge a force with a magnitude of:
 would exert on this charge a force with a magnitude of:
 .
.
Note that the electric charge in this question is negative. Hence, electrostatic force on this charge would be opposite in direction to the the electric field. Since the electric field points due south, the electrostatic force on this charge would point due north.
 
        
             
        
        
        
Answer: The reason for the differences in density is the composition of rock in the plates. When two plates come in contact with each other through plate tectonics, scientists can use the density of the plates to predict what will happen. Whichever plate is more dense will sink, and the less dense plate will float over it.
Explanation:
Hope this helps ( not copied and pasted, this answer was done by me so I don't know if it's good or not)