Airy Questions
All My Homies Have Spoilers on Their Cars But I was Wondering, Just? Before I Bought One Too, I’ve Always Wondered?
Spoilers Are Real Cool, But What’s Their Use?

Many cars, including racing cars, carry different spoiliers on them. Some cars, including the Ferrari F1 cars, even have them both front and back. Spoilers help make sure that the car doesn’t fly. When a car goes really fast, and it doesn’t have a spoiler, it will, like an airplane, start flying.

Normally, the weight of the car is the only thing that pushes the tires down, giving it grip. Without spoilers, you would have to increase the weight to ensure that it doesn’t fly. You could also change the tires. But weight won’t help in turns, which is when you really want the extra grip. A spoiler is like an airplane wing, but upside down. It generates something called ‘down force’ on the body of the car. Downforce is created by the difference in air pressure over and under the spoiler. When a car drives, there is a higher pressure on the top side of the spoiler and a lower pressure on the bottom side. Down force gives cars grip on the road. When some cars go really fast(200 mph), and they have spoilers, they could hang upside down on a track, and they would stick to the road.

There is something bad about downforce . Everytime a spoiler creates down force, it also creates drag. Drag is a natural reaction when of air to resist motion through it. Drag is bad, it slows down the car. So, down force is good, but too much down force creates drag, which is bad.

?I Just Became A Mom And Accidentaly Set My Daughter’s Dress On Fire? ?While Cooking?
? I Just Called My Mom Since I Didn’t Know What To Do But For Future? ?Reference:?
?Help, Her clothes Are On Fire, What Do I Do?

If someone’s clothes are on fire, they should be wrapped in a blanket. It would put out the fire immediatly because the blanket would lessen the oxygen supply of the fire.

Three things are needed in order to produce fire. It needs oxygen (air) to keep the fire burning, enough heat to raise the material to it’s burning temperature, and some sort of fuel or flammable material. Last, it needs the chemical reaction that is fire. Oxygen, heat, and fuel are known as the fire triangle. If you take any of those things away and you can’t make fire or the fire will be extinguished.

In this case, you would be taking away the air. Air is the fire’s source of oxygen. Since oxygen is in the fire triangle, if you take it away the fire would go out. Another way of putting out your clothes if they’re on fire is rolling on the floor, this also takes away some of the oxygen.

?Me and My Friend Have Been Fighting For A Long Time Whether Or Not? ?It’s True So I thought Maybe We Could Solve Our Fight By Asking You?
?A Mill Operator Can Change The Speed Of A Windmill?

A mill operator can change the speed of a windmill. He can change the postion of the blades, which affects the speed.

The whole tower can be turned. It is turned depending on the direction the wind is coming from. If it is facing the wrong way it will get little, or not wind at all. Also, every blade can be adjusted seperately by the mill operator. That way, you can adjust the amount of wind the windmill is getting even more. The wind is what turns the blades. So, the more wind the blade gets, the faster it will turn. If it doesn’t get a lot of wind, it will turn slower. Therefore, if the wind is coming from the North and the windmill is facing East, it will not move. The tower should be turned so that it is facing the direction the wind is coming from, in this case the North. If it is coming from the NW or NE, the blades can be turned so that they will move faster. If the mill operator would want the mill to turn slowly, he could just keep it facing sideways. In case of a storm, the wind mill has an mechanical brake that stops the blades from moving, keeping it from damage.

The mill operator can change the blades. The blades are the object that get all the air, which gives it speed. So if he wants it to go slow, he can adjust it to move that way, and if he wants it fast, he can adjust it to go that way too.

?After Years Of Pondering And Long Thinking I Tought Of a Question? ?Crucial To My Life,I Have Observed This Object For A While Now, So? ?Here I Go?

?How Can A Vacuum Cleaner Pick Up Dust But?
?Not Air?

A vacuum cleaner is designed not to pick up air only dust. The air brings the dust in, but it goes out again, leaving the dirt in the bag.
When you turn on a vacuum cleaner three things happen. First, the elecrticity starts the motor, which is attached to the fan. The fan has angled blades, like an airplane. Then, as the fan blades turn, they make air go out the exhaust port. When the air molecules are pushed forward, the air pressure increases in front of the fan and drops behind the fan. The creates a partial vacuum inside the vacuum cleaner. The outside air pushes itself into the vacuum cleaner becuae the air pressure inside is lower than on the outside. While the vacuum cleaner is on, there is a constant stream of air moving in the intake port and out the exhaust port.
The air rubs against dust while moving into the vacuum cleaner. The friction causes the air to take some of the dust and debris into the vacuum cleaner. Some vacuum cleaners also have brushes at the intake port to push up the dirt so that the air can easily take it into the vacuum cleaner. As the air and dirt move into the exhaust port, it goes through the vacuum-cleaner bag. They have little holes in them that act as an air filter. They are large enought to let air through, but too small to fit the dirt particles through. So, the air moves through the material while the dust stays in the bag. This way, the bag dosn’t fill up with air, but with dust, and the dust doesn’t go back out with the air. So you can have a clean home, without any dust!

?I Was Talking To Someone And He Compared The Strangest Thing, ?
? I Pretended To Understand But I Really Wonder ?
?What Could Possibly Be The Link Between A?
? Parachute And A Dandelion Seed?

Dandelions are often said to travel like tiny parachutes. They both have the same aerodynamics. They both use air resistance to safely get to their destination.

Parachutes and dandelions seeds work because of air resistance. If it weren’t for air resistance, the gravity would cause everything to fall down at the same speed. So no matter how big something was, it would fall at the same rate as something way smaller. Air resistance pushes the objects up a little, working against gravity. It happens becuase when things fall, they have to push teir way past the atomsthat make up air in order to fall.

That is what makes dandelion seed and a parachute work. If someone were to fall without a parachute, they would push the air molecules out of the way very easily, so the air couldn’t slow them down. But when they are attached, the parachute will run into lots of air molecules slowing down.

Also, they both have the same goal: to slow down. A parachutist doesn’t want to crash onto the floor, but they want to fall down slowly. A dandelion seed doesn’t want to fall next to the dandelion, it wants to take a ride in the wind a land on the floor and make more dandelions.

? Thought A Motorcycle Only Had Air To Blow Through Your Hair When? ?you’re Riding On It But I Heard There Are Actually Uses For Air In A? ?Motorcycle?
?Why Does A Motorcycle Need Air?

A motorcycle needs air for two reasons. The first reason is to burn the gas and the second reason is to cool down the engine.

A motorcycle engine works on gasoline being burnt. You need fire to burn something so you need to have the 3 ‘elements’ of fire. Oxygen, heat and fuel. The gas is our fuel, the motorcyle provides the heat and the air is our oxygen. The engine mixes air with the fuel. The car then ignites a mixture of fuel and air in a cylinder which causes the gases to suddenly expand. The gases push down a piston which turns a crankshaft. The crankshaft transforms the energy from the piston into a rotary motion. This eventually causes the rear wheel to rotate.

Combustion inside an engine produces temperatures that are high enough to melt iron. A cooling system takes the heat away and radiates it into the air. Many motorcycle engines are air cooled. They are designed so the flow of air can reach the metal fins that take heat away from the cylinders.

Bibliography

http://www.physlink.com/Education/AskExperts/ae496.cfm

http://www.car-forums.com/s15/t7869.html

http://www.pp.okstate.edu/ehs/MODULES/exting/Triangle.htm

http://mediatheek.thinkquest.nl/~lla070/wind_mogelijkheden.htm#hoewerkt

http://home.howstuffworks.com/vacuum-cleaner2.htm

http://tm.an.ask.com/r?t=c&s=a&id=30787&sv=za5cb792a&uid=0B4B717E3ECECB124&sid=1939D664BBEF2D124&p=%2ftop&o=0&u=http%3a%2f%2fwww.sci.mus.mn.us%2fsln%2ftf%2fd%2fdandelion%2fdandelion.html

http://tm.wc.ask.com/r?t=c&s=a&id=30787&sv=z6f5372cd&uid=0B4B717E3ECECB124&sid=1939D664BBEF2D124&p=%2ftop&o=0&u=http%3a%2f%2fvan.hep.uiuc.edu%2fvan%2fqa%2fsection%2funderwater_and_in_the_air%2fair_resistance%2f20011003081309.htm

wings.avkids.com/Book/ Sports/Images/parachute.gif

http://encarta.msn.com/encyclopedia_761566146/Motorcycle.html#endads