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What happens when you drink through a straw?
This question points up some key misconceptions about what a vacuum is.So you put a straw in your cup of water. If you look down the straw or could look through it, you would see that the level of water inside and outside the straw are exactly the same. This is because the atmosphere is pushing down on the water inside the straw, and it is pushing down equally hard on the water outside the straw. So the pressures are equal.When you suck on the straw, you are decreasing the pressure in your mouth and lowering the pressure of the air in the top of the straw. When that happens, the force of the atmosphere pushing on the water in the glass is higher than the force of gas inside the straw. The atmosphere forces the liquid up the straw into your mouth. So, in essence, you ARE NOT sucking the liquid into your mouth, the atmosphere is pushing it there.This is easily proved by an experiment. Try drinking water from a straw that is more than 20 meters tall. It won't work. At around 20 meters, the massive column of water inside the straw would be pulled down by gravity, with a force greater than the upward force caused by the atmosphere. Even if you completely evacuate the straw with a high-powered pump the water won't make it up the straw. This is why you can't pump water out of a well that is more than 20 meters deep in the ground. Anything deeper than that and you need to use a compressor to pump air at high pressure down into the well, to force the water out (essentially make the upward pressure higher than the atmosphere alone provides), or revert to the tried and true method using buckets.Of course, a similar principle applies with underground or artesian wells. The water there is already under greater pressure and will flow to the surface if given a path.
Do straw float in a glass of water?
Yes, plastic drinking straws will float in water.
What force is drinking out of straw?
It is all to do with air pressure. We lower the air pressure inside the straw by sucking the air out of it, atmospheric pressure which is pushing down on the surface of the drink literally forces it up the straw into our mouth.
What prevents mercury in the tube of a barometer from running out into the container at the bottom of the tube?
The top of a barometric tube is sealed leaving no place for air to escape. It works along the same principle as a drinking straw, but in reverse. In a drinking straw, the sucking motion reduces the pressure of the air inside the straw to a lower level than the air outside the straw. Liquid resists changes in volume due to pressure and is drawn up through the tube due to the air pressure exerted on the surface of the liquid outside the straw. In a barometric tube the tube is sealed at one end, trapping a finite amount of gas in the tube. The air pressure inside and outside the tube is equal, keeping the mercury suspended at a certain level. If the pressure outside is raised, more force is exerted on the surface of the mercury outside the tube than on the surface inside. This raises the level of the mercury in the tube until the pressure of the air is equalized -- there is still just as much air in the tube, but a smaller volume at a greater pressure.
What Chianti has straw around the bottle?
Chianti Classico Raffino had the straw around the flask
Why do the water in a drinking straw does not drip out when you press the top of the straw with your thumb or finger tip?
Because under your thumb, inside the straw, there is now a vacuum which keeps the water in.
Why the water in a drinking straw does not drip out when you press the top of the straw with your thumb of finger tip?
Because under your thumb, inside the straw, there is now a vacuum which keeps the water in.
Did the Chinese invent the drinking straw?
The drinking straw as we know it today was invented in 1888 by Marvin Stone.
Can you eat a straw?
No, not a drinking straw. As for straw as in grass, I guess someone could eat that.
How can you repair a vacuum with a straw stuck inside it?
Vacuum cleaner parts often get clogged with various things and item, the best way to remedy this problem is to take the vacuum to your neighborhood vacuum dealer. Vacuums dealers have specific tools to help fix almost any problems with vacuums if your vacuum can not get fixed you might be offered a discount on a new vacuum.
Why you cannot drink with a hole in the straw through which you are drinking?
Assuming you do not refer to the hole at the top and bottom but are referring to a third hole somewhere above the liquid line then the reason is this; By sucking on the top of the straw which is in a liquid, you create a vacuum above the liquid line which draws the liquid to replace the vacuum. If a hole appears somewhere above the liquid line then air is drawn limiting the vacuum and thus the liquid cannot be drawn through the straw.
When was the drinking straw patented?
The modern drinking straw was patented on 3 December 1888 by Marvin Chester Stone.
Who was the drinking straw made by?
Historians have four that the earliest drinking straw was made by Sumerians for drinking beer. It was used to avoid the solid byproducts of fermentation.
How are rarefactions produced?
Rarefaction is the opposite of compression, and is a lowering of pressure. You can produce many simply by talking; sound waves consist of both. Other ways would be to induce a (partial) vacuum by sucking through a straw or turning on a vacuum cleaner.
Who created the drinking straw?
It is prehistoric.
A drinking straw?
i like cheese
What is drinking straw in Malay?
Penyedup
