0
What is it about warm gas molecules that give them higher gas pressure than cool gas molecules?
Warmer molecules have more energy, and therefore move faster. Gas molecules will collide with solid objects, these collisions are what cause gas to have a pressure in the first place. Faster molecules mean more energetic collisions, hence a higher pressure on their surroundings. In the case of a sealed vessel, that means that when the temperature rises high enough, the molecules collide with it with enough force to rupture the vessel and burst it open.
What else can I help you with?
Why does moving molecules give a cold breeze?
In the Earth's atmosphere, air moves from areas of high pressure to areas of low pressure. Air pressure is less in hotter areas than cooler areas as the warm air expands. This means the breeze from the cool sea flows to the land in the daytime and as land cools faster than seawater the reverse happens in the day. Why does a breeze feel cool? It takes energy to evaporate water so if a breeze evaporates the moisture (sweat) from our skin then the water molecules take energy from our skin as they evaporate. This makes us feel cool.
What causes dizziness when you stand up or bend down?
Well, when you stand up, your atmospheric pressure in your scalp is a couple feet higher than sitting down, so the pressure exerted by air molecules O2 and CO2 and N2, make the pressure on your head higher.
Why does your oil pressure read high when going over 70mph?
because you are going over 70. High rpm will give higher oil pressure.
Would a low pressure turbo give a good blow off valve noise?
All turbos will give a blow off valve noise but the higher the pressure in the boost pipes (eg) higher boost, the louder the blow off noise and if you have a recirculation valve remove that with a remap and the noise will be even louder.
Will extending line 1 ft above sink increase water pressure?
No, it will decrease the pressure. The higher you push the water the more pressure it takes to get it there, therefore less pressure at the tip. Putting in a larger supply line, will not only give you more water but less friction loss in the line and more pressure at the tip. A booster pump will also give more pressure.
Why do you need to inflate the blood pressure cuff to measure blood pressure?
Because it creates a higher pressure than the mean arterial pressure of the brachial artery. So, it temporarily stops blood flow. The slow release of pressure and listening with a stethoscope will give you the systolic and diastolic pressure.
What is Avogadros law?
This law give the variation in volume of a gas with amount of the gas. It states that equal volumes of all gases under similar conditions of temperature and pressure contain equal number of molecules.
What happened when a balloon filled with air was squeezed and gently pressed?
The air inside the balloon is at a higher pressure than atmospheric pressure so the gas molecules inside the balloon are closer together on average than gas molecules outside the balloon. This means that the repulsive forces between the gas molecules inside the balloon are greater than the repulsive forces between the gas molecules outside it. When the balloon is opened, the gas molecules in the open end at the border between the higher pressure interior and lower pressure exterior will experience a greater repulsive force from the gas molecules inside the balloon than the molecules on the outside. This means that they experience a net force pushing them out of the balloon. As these gas molecules are pushed out by the gas inside the balloon, they push back on it with an equal and opposite force (due to Newton's 3rd Law of Motion). This equal and opposite reaction force causes the gas in the balloon to be pushed in the opposite direction to the escaping gas, which in turn pushes the balloon. As more and more gas escapes, the reaction force on the balloon continues to accelerate it, making it shoot off, until enough gas has escaped for the pressure inside the balloon to have dropped to the same level as the pressure outside the balloon.
Why does the air pressure in a bicycle tyre increase as more air is pumped in?
You are forcing more air into the same size space. The oxygen molecules get closer and closer as you continue to push air in. Eventually the tire will give way and release the pressure.
How do find how much pressure is coming from a pipe?
The only way you can find accurate pressure in a pipe is by mechanical means. If you want to know the pressure in your home just go to a hardware and by a pressure gauge with a hose adapter and screw it to your outside faucet and that will give you the pressure of your water at that elevation of your out side faucet. The higher the elevation of the water line = the less pressure.
Which is a mechanism of heat transfer?
A broad question, so I will give a broad answer. A driving force is needed and what drives heat transfer is simply temperature differences between two bodies. The mechanism at say a molecular level is really just the exchange of the energy from molecules to molecules. Higher energy molecules will collide with lower energy molecules and voila, you have heat transfer.
Why do gases become conductors at low pressure and high voltage?
When we pass electricity through a gas , the gas molecules get excited and give out electrons and the gas molecules become positively charge (form ions). As the ions are positively charged and the electrons are negatively charged they have a tendency to recombine and for a neutral gas molecule again. (Note- High pressure=molecules are more close [more crowding] Low Pressure=molecules are not so close[less crowding] ) At atmospheric pressure the gas molecules are more closer to each other that's why they recombine easily avoiding the electrons to flow. At low pressure the gas molecules are not so close and hence it is difficult for the ion and the electron to recombine and form a neutral molecule. This results into flow of electrons and hence the gas starts to act as an conductor.
