Why a gas pull when expand
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Each time they collide with the walls they exert a force on them. More collisions mean more force, so the pressure will increase. When the volume decreases, the pressure increases. This shows that the pressure of a gas is inversely proportional to its volume.
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Explanation:
Heat can be seen as the total amount of energy of all the molecules in a certain gas. ... Therefore they sometimes use expanding gas to cool the infared cameras. When gas expands, the decrease in pressure causes the molecules to slow down. This makes the gas cold.
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