Which parts does it consists of and how it works
135812
If you're referring to the lever that allows the height to be adjusted, it's quite simple.\n\nIn the stem column underneath the seat, there is a cylinder which has been filled to a high pressure with nitrogen gas.  With no weight on the chair, the cylinder expands, moving the seat up.  The weight of a human is usually enough to overcome the pressure in the cylinder, forcing the cylinder back in.\n\nNow, the handle is basically a clutch to hold the cylinder in place.  Normally, the clutch is engaged, which prevents the seat from moving up or down.  When the lever is pulled, the clutch is released, allowing the cylinder to either move up or down, depending on the amount of force that is resting on it.   With some particularly heavy people, their weight is enough to overcome the holding force of the clutch, and the seat will sink down regardless of whether the clutch is engaged or not.
300581
sorry cant answer such a long question
619708
you could porb try an internet site like howstufworks.com
468647
Explain the business.
185304
i can't help you on this one but what i can suggest is contacting them directly. they're pretty helpful and could give you a complete listing of what they work with.
44322
This article gives a good description of all the parts, their purpose, and some diagrams. That should be great for your report.\nhttp://en.wikipedia.org/wiki/Eye#Anatomy
258433
I assume this is based on the principle of Osmosis. I would like a bit more data before answering further.
590900
here's a website that probably can help you\n\nwww.howstuffswork.com\nif you can't reach it, just type "how stuff work" in yahoo search engine, you will find it, cause I forgot how the website call itself :)\n\nsorry
291726
Oh good grief.  If it's anything like what I've just done it'll include velocity, centrepetal forces, magnetic fields, friction, gravity, forces generally, working out the mass of something and the speed at which it will fall, balances with pivot points, static electricity, AC & DC electricity, transformers, vectors and so on and so on.  It's quite hard but it's maths based so if you like maths, you should be ok.  I wish you luck.
612037
origination, input, output, processing, storage & input
332686
hey can you explain more on how the self propel car with only rubber bands works, explain how you attach it to the car and go step by step please if you will my email is inspironb130@yahoo.com
252236
Try newsrover, it should put all the parts automatically together for you:\nhttp://www.newsrover.com/
627232
They have an "About" page that explains what it's all about. However, I had to read it more than once, and STILL am not 100% able to explain it. It looks very "busy" and confusing. *chuckle* But I'd advise giving the page a try. The link is below.
543473
Read what it contains
374787
Apparently it involves all of the following except \n\nF) Doing your own homework
91120
It depends on the object.  You find the area of all the sides and then add them together.
46103
Chromatographyis a way to seperate out different parts of a mixture.  The idea is that you pass a fluid (either a gas or a liquid) down a long path, and the different molecules will move at different rates.  THat's the long and short of it.  So the molecules that move fastest get to the end first, and the slowest come out last.  You seperate things by making them race, and similar chemicals will take a similar amount of time to finish the race.\n\nI'm assuming that you're getting confused by things like "solid phase" and "mobile phase" and "bind affinity" and such.  The idea though is that you set up different types of obstacles depending on which things you want to win the race.  Sometimes this is dine by using something with a lot of positive charges, so that things with negative charges will get stuck and the things that are neutral or positively charged will win the race. Sometimes you sort things by size, by using a gel as an obstable with a bunch of little pores in it: little guys get lost inside and the fat guy wins the race.  With gases, you can just make the race really, really, really long, and the lightest parts will move the quickest while the hevy boys lag behind (this is a way that uranium is enriched for nuclear reactors and bombs).