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The decompression of air is an endothermic process. That means it absorbs heat. Air in a tire is under 35 to 40 psi of pressure. This pressure conpresses the gas inside the tire, so to speak. When you release the air, it rapidly expands and expanding gas cools the same as compressing gas warms up.
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Decompression is Exo-thermic! The pressure compresses the gas - err, well, yes. Compressing air means raising its pressure by reducing its volume; and if done rapidly also raises its temperature. The last bit is right: sudden expansion cools it.
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In the atmosphere a hot air layer is found above a cold air layer How is the separation achieved and why does hot air always tend to rise?
It is because a hot air is a light matter while a cold air is a heavy matter of gas. Like, the difference of low(hot) pressure and high(cold) pressure area.
Why does hot air float while cold air rises?
density
'why does the fan still run on the unit after it cycles is over. But it is blowing hot air not cold?
why does the fan still run on the unit after it cycles is over. but it is blowing hot air not cold
Does hot air rise?
Yes. Hot air is less dense, and therefore lighter than cold air, so it will rise as cold air will drop. A perfect example of this, is smoking rising to the ceiling in a fire, or smoke rising out of your chimney.
A truck's tires have the correct air pressure at room temperature about 20c explain why a tire is more likey to explode when the truck is driven in hot weather than in cold weather?
As a tire goes round and round heat builds up inside the heat expands the air inside the tire. On a normal day that he can dissipate but as the temperature on the outside increases is more difficult for the heat (energy) to leave the inside of the tire. As the temperature increases the pressure inside the tire also increases. It is that pressure that can cause the tire to explode.
Can cold air deflate a tire?
yes, but it is dependent on how hot the air was when the tier was first inflated.
Air is cold or hot?
Air can be either cold or hot.
Why do your bicycle tires look flatter on cold winter days than on hot summer days?
In hot weather the air molecules in the tire generate more pressure on the tire than in colder weather.
Where does the winds of come from?
It's the change in air temperature. Cold air heats up and becomes hot air and rises up since hot air is lighter than cold air. The other cold air stays nearer to the ground and that is what causes the winds to blow.
Is there such thing as hot air and cold air?
Yes. There is such thing as hot air and cold air
Does hot and cold air fall or rise?
Hot air rises and cold air falls.
Does hot air move into cold air or does cold air move into hot air?
Both. Since hot air is less dense than cold air, the hot air rises as the cold air falls (i.e. as the cold air displaces the hot air). If you were to dye hot air & then inject it into the center of a room, you would observe the dyed hot air rising. What you may not realize is that gravity draws the (invisible) surrounding dense cold air downwards as it displaces the (visible) less dense dyed hot air. === Previous Posters Answer: Hot air rises
If it becomes too hot inside the glass house ventilators can be open in the roof how convection help to cool things down?
Hot air is less weight than the cold air, the hot air rise and go outside from the vantelators on the roof the cold air come inside and make the room cold.
Why is it advisable not to increase the air pressure in a car tire to full limit when driving on hot day?
AnswerTire pressure is supposed to be measured while the tire is cold. Tire pressure is higher when the tire is hot; therefore, the pressure of a hot tire will drop below its limit when it cools down.
What is the difference in hot and cold air particles?
what is the diffrence in hot and cold air particles
Why does heat rise and how does cold drop?
Cold air is compact air Hot air is less dense than cold air Ergo, hot air rises ; cold air sinks
Where do winds come from?
Winds blowing is the effect of change in the temperature in the air. Since hot air is lighter than cold air, hot air develops from cold air nearer above ground, and when it's hot enough, it becomes lighter and rises up. Cold air stays nearer to the ground and the force of hot air coming up and cold air staying put forms winds. If the winds are big that means the change of temperature is big too.
