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How do Submersibles work?
While it's easy to push on water, it's hard to pull on water. When you drink soda through a straw, you may feel like you're pulling on the water, but you're not. What you are actually doing is removing some air from the space inside the straw and above the water, so that the air pressure in that space drops below atmospheric pressure. The water column near the bottom of the straw then experiences a pressure imbalance: the usual atmospheric pressure below it and less-than-atmospheric pressure above it. That imbalance provides a modest upward force on the water column and pushes it up into your mouth. So far, so good. But if you make that straw longer, you'll need to suck harder. That's because as the column of water gets taller, it gets heavier. It needs a more severe pressure imbalance to push it upward and support it. By the time the straw and water column get to be about 40 feet tall, you'll need to suck every bit of air out from inside the straw because the pressure imbalance needed to support a 40-foot column of water is approximately one atmosphere of pressure. If the straw is taller than 40 feet, you're simply out of luck. Even if you remove all the air from within the straw, the atmospheric pressure of the water below the straw won't be able to push the water up the straw higher than about 40 feet. To get the water to rise higher in the straw, you'll need to install a pump at the bottom, or a submersible pump. The pump increases the water pressure there to more than 1 atmosphere, so that there is a bigger pressure imbalance available and therefore the possibility of supporting a taller column of water. The submersible pump can boost the water pressure well above atmospheric and thereby push the water to the surface despite the great height and weight of the water column. Multiple stage submersible pumps are arranged in series so that the discharge from the first stage becomes the intake for the next stage with each successive stage adding its pressure to the previous one. Surface suction pumps are really only practical for water that's a few feet below the surface; after that, deep pressure pumps are a much better idea.
How do submersible pumps work?
While it's easy to push on water, it's hard to pull on water. When you drink soda through a straw, you may feel like you're pulling on the water, but you're not. What you are actually doing is removing some air from the space inside the straw and above the water, so that the air pressure in that space drops below atmospheric pressure. The water column near the bottom of the straw then experiences a pressure imbalance: the usual atmospheric pressure below it and less-than-atmospheric pressure above it. That imbalance provides a modest upward force on the water column and pushes it up into your mouth. So far, so good. But if you make that straw longer, you'll need to suck harder. That's because as the column of water gets taller, it gets heavier. It needs a more severe pressure imbalance to push it upward and support it. By the time the straw and water column get to be about 40 feet tall, you'll need to suck every bit of air out from inside the straw because the pressure imbalance needed to support a 40-foot column of water is approximately one atmosphere of pressure. If the straw is taller than 40 feet, you're simply out of luck. Even if you remove all the air from within the straw, the atmospheric pressure of the water below the straw won't be able to push the water up the straw higher than about 40 feet. To get the water to rise higher in the straw, you'll need to install a pump at the bottom, or a submersible pump. The pump increases the water pressure there to more than 1 atmosphere, so that there is a bigger pressure imbalance available and therefore the possibility of supporting a taller column of water. The submersible pump can boost the water pressure well above atmospheric and thereby push the water to the surface despite the great height and weight of the water column. Multiple stage submersible pumps are arranged in series so that the discharge from the first stage becomes the intake for the next stage with each successive stage adding its pressure to the previous one. Surface suction pumps are really only practical for water that's a few feet below the surface; after that, deep pressure pumps are a much better idea.
Why is there a limit on the amount of water vapor the air can hold?
It takes a lot of energy to turn water into water vapor. The amount of energy that the water gains to turn into water vapor begins to be transferred into the surrounding air. If the air is willing to take on more energy the water vapor condenses quicker. This is why hot air will hold more water vapor than cold air.
How can you show that liquids transfer heat by process of convection?
-- Take a glass of water. Set it aside or put it in the fridge. -- Take another glass of water. Mix some food coloring into it, then put it in the microwave or in the oven for a short time. It doesn't have to boil, just warm it up. -- Put a straw down into the glass of cool, colorless water. -- Dribble some of the warm, colored water into the straw. The warm, colored water runs down inside the straw, and comes out on the bottom of the cool, colorless water. It just lays there for a few seconds, then it starts rising to the top, carrying heat with it. You can see exactly how it's moving, because wherever the warm water goes, the color goes. Now you can see how a pot of water gets heated through and through on the stove, and you can understand why we put the fire under the pot and not on top of it.
How much time does it take water to freeze?
That depends on the amount of water, the temperature, the shape of the container that holds the water.
How much of cold water can a person hold?
There is only so much water cold or hot that a person can drink and hold in their body at a time. For many people it is about 60 to 100 ounces before they have to use the restroom to relieve themselves.
How much water will flow through 1.5 inch pipe?
Depending on the time allowed, all the water you want.
How does a tortoise breathe under water?
They don't. They can just hold their breath for a long time. And giant tortoises don't even like water that much!
How long would it rain if all of the oceans evaporated?
a long time A: It would be impossible for the air to hold that much water.
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.
Can rabbits have too much straw to nest with?
No, your rabbit can not have too much straw, more in the winter will provide more warmth and protection from the cold, and in summer (warmer weather) you should put in less as it will cost more to have this much straw all the time, in the summer ONLY put enough to cover the floor of the hutch, as your rabbit can over heat and get sick.
Why can a camel survive in the desert for a long period of time without drinking too much?
Because they can hold large amount of water in there body
Why use straw bedding?
I would ntsuggest on straw bedding it is very hard to clean when a horse urinates on it. Then you have to take out all the hay and it is gross and time consuming. Use saw dust. It is much easier to deal with
Was straw a living thing?
Straw is the dried stalks of plants like wheat or oats, so yes, at one time straw was a living plant.
How much diesel can be filled at a time in tractor?
As much as the fuel tank can hold
Can a turtle breathe in water?
Turtles breath air. But they can hold their breaths in water for a good amount of time.
Do you backwash every time you drink out of a straw?
sometimes
