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What is a screw thread mechanism?
Picture a nut on a screw. You are holding the nut so it can't turn, but allow it to go up and down the screw. The screw is restrained so it can turn, but not move back and forth. As you turn the screw one way and the other, the nut will move up and down the screw. That is a trivial example of one very common screw thread mechanism.
What is a plumbing trap?
When the pipe goes down, and back up, and back down again, the first "up-curve" is called the trap because when the water goes down the drain, not all of it goes back up and down again (thanks to gravity). So there is a little bit of water there and it prevents any gas/odors from coming back up the sewer pipe. Provided that the pressure on the sewer-side of the trap does not exceed atmospheric pressure on the drain-side, the water will not get forced back up. Provided that the water is not allowed to evaporate, there will always be water there. And provided that there is enough water such that the top of the inside curve of the up-turn is lower than the top of the trapped water level, the trapped water will seal out the sewer gas.
Does water come from the sewer when you flush it?
Yes, all the water we use is sent to the sewers and is thoroughly cleaned out and disinfected of any germs. Then it is sent back to us and the process begins again.
How do you replace faucet handle to shower?
Take the end cap off, unscrew the screw in the handle, take off handle, put exact same new handle on, screw it down, put cap back on.
What is eccentric screw pump?
A screw pump is a device for pumping fluids or finely divided solids by use of a moving inclined plane (a screw). Picture a long screw of uniform diameter that is slipped into a closely fitting jacket or pipe. By turning the screw in the right direction, material which is pooled or clustered around the bottom can be lifted. The device was known to ancients and was used to lift water. Archimedes' screw is just this kind of device, but its history certainly dates further back, and perhaps as much as 400 more years to the time of the Assyrians (as in Hanging Gardens of Babylon). It is used today to move many kinds of fluids, and is very common in the movement of grain (where it's called an auger) and other solids that come in the form of small pieces or units. A snow blower or cement truck represent an application of the screw pump.
Is evaporation a physical or chmical change?
a physical because it becomes water again a chemical means it can not change back
You froze Water in a plastic cup?
Yes, the water has turned into ice. It was a liquid but it is now a solid. You can change it back again by melting it.
How do you change the paddles in an tippmann a5?
You unscrew the screw on top of them, drop in the new ones, and put the screw back.
Is boiling water to make tea a chemical reaction or a reversible change?
Boiling water to make tea is a reversible physical change. When water boils, it changes from liquid to gas, but it can easily be reversed by cooling the gas back into liquid form. No new substances are formed during this process, indicating that it is a physical change, not a chemical reaction.
Give one example of physical change that could be easily reversed?
Change of state from a liquid to a solid and back again.
What is the historical background of the screw machine products industry?
The concept of a screw dates back as far the third century B.C., when the Greek mathematician Archimedes designed a water-powered, screw-driven system to lift water.
What are example of a physical change that can be reversed and an example of a physical change that cannot be reversed?
An example of a physical change that can be reversed is melting ice into water; this can be reversed by freezing the water back into ice. An example of a physical change that cannot be reversed is breaking a glass; once the glass is shattered, it cannot be returned to its original form.
How do you change sliders on a ski doo mx?
to take them off remove the screw in the front of the slide. then use a screwdriver and place it on the flat edge, tap the screwdriver with a mallet or hammer all the way down the rail. To replace one just line it up and slide it back on maybe need to tap it in with the mallet again then replace the screw at the front again.
Is it true that when a stubstance undergoes a ohysical change it becomes a different stubstance?
Not exactly. A physical change is when a substance is changed, but can be reverted back to its original form. An example of this is water. If you heat up water it turn to water vapor (steam) and when it cools down, it turns back into water again. When you freeze water it turns to ice, but if you heat it up, it turns back to water. I think you're talking about chemical change. A chemical change is changing a substance to a new one and cannot be reverted back into its original form. An example of this is a burning paper.
Give an example of a reversible change?
An example of a reversible change is an ice cube meting into water and then changing back to an ice cube again if frozen. Another is chocolate melting when heated and changing back to a solid when cooled.
How do you get a Pokemon back from a broken poke-walker?
undo the back screw, and then the other screws inside. now prize the thing open and cut the first wire. Then use black electrictions tape to seal it back up, and screw it back together and voila. it should work again. :)
What is the term for the movement of water from one part of the hydrosphere to another and back again?
The water cycle is the term for the movement of water from one part of the hydrosphere to another and back again.
