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They do it because it makes the car faster and more fuel efficient as it is not having as much resistance pushing against it.
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∙ 12y ago
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For what reasons is air resistance not useful?
answ2. I'm not sure air resistance is of no value. Some shock absorbers in cars are air based. And an airbed that instantly deformed might be uncomfortable.And maybe a fan would not move the air if there were no friction.Blah Blah there are no not good uses so give up on your homework like me!This is not true, there are many ways that air resistance is a pain, for example, it slows cars down when they are trying to accelerate, hope this starts you off!!
How can the shape of a car reduce air resistance?
yes. the optimum shape of any vehicle would be a point, like a jet. but that isn't possible in a car. one of the most aerodynamic vehicale is the Chevy corvette. also if it is a fast back or coupe, with a low sweeping roof helps reduce air drag on the rear
Some ways to reduce friction are by using or applying .?
A way to reduce friction is by using or applying a wax-based product to the surface that touches the ground. Snow skiers apply a wax to their skis. Another way of reducing friction is by designing an object that produces the least amount of air resistance, like a spoiler on a car.
Why does a long and thin wire have a great resistance?
Because resistance is inversely proportional to the cross sectional area of the wire and directly proportional to its length. R = p*L/A, where R is resistance (in Ohms), p is resistivity (property of the material, in Ohms*m), L and A are length and area of the wire. And if you think about it, it makes perfect sense. In thick wire electrons have a lot of 'room' to move, they do not obstruct the path. If you imagine it is like a road with many free lanes - cars move fast and freely i.e. low resistance (or more scientifically, like many wires in parallel). Where as length is proportional to the resistance, since every small segment of wire adds more resistance to the total (many wires in series).
What are the 3 ways of decreasing the friction?
Decreasing friction:- add a lubricant (like oil in a door hinge)- rolling objects (e.g. rollerblades)- streamlining (like making an aircraft a special shape to reduce wind resistance)Source(s):I have a good memory and listen in school
What objects are streamlined to reduce friction by air resistance?
like deflectors on lorries
What in electricity is like friction and tends to reduce the amount of current flow like buildup in a pipe reduces water flow?
Resistance inhibits current flow.
What all designers like?
designers like when something is out of the ordinary but not to much. also designers like it when people compliment there designs not put them down because if you put them down it could affect there next design.
How do you improve streamlining on a car?
Wind tunnels are used to improve the streamlining of cars.The shape of a car can be made like a tear-drop or like an aeroplane wing to reduce air resistance. Sometimes a spoiler is fitted at the the back to improve the air flow making it more streamlined. Another way to reduce air resistance is to make the car closer to the ground.
What is the resistance of a cars spark plug since a spark plug is an open circuit?
The resistance measured under low voltage conditions should be infinite. High voltage ... like that that produces the spark ... behaves differently.
Why are car manufacturers trying to reduce their carbon footprint?
because it upsets environmentalists and they want to appear like they care about the planet, this may also make people want to buy their cars because they think the company is trying to help the planet. Many countries have passed laws to reduce greenhouse gas emissions, like the carbon dioxide released when petrol is burnt. Cars have to reduce their emissions or they can not be sold.
What are some designers worn by Nina Dobrev?
Nina Dobrev wears designers like Valentino.
What is cuba doing to reduce their air pollution?
Cuba, like many other countries, is taking care to reduce air pollution. They are reducing the number of cars on the streets, and are also looking into reducing output from factories.
What are the two main things done to car to improve streamlining?
Wind tunnels are used to improve the streamlining of cars.The shape of a car can be made like a tear-drop or like an aeroplane wing to reduce air resistance. Sometimes a spoiler is fitted at the the back to improve the air flow making it more streamlined. Another way to reduce air resistance is to make the car closer to the ground.
How might solar powered buildings and cars reduce the amount of carbon dioxide that is added to the atmosphere?
Solar powered buildings and cars reduce carbon dioxide that is added to the atmosphere because instead of having the process of burning like fossil fuels they take in the light energy from the sun, store and use it.
How might solar powered buildings cars reduce the amount of carbon dioxide that is added to the atmosphere?
Solar powered buildings and cars reduce carbon dioxide that is added to the atmosphere because instead of having the process of burning like fossil fuels they take in the light energy from the sun, store and use it.
What is 3 possible solutions to stop pollution?
It is impossible to stop pollution. You cannot people to use air conditioner or cars. You can reduce pollution. You can practise the 3'R with are reduce, reuse and recycle, to reduce all the type of pollution. Use electrical cars example hybrid cars to reduse air pollution. Throw rubbish in a proper place example in rubbish bin, to reduce land pollution, water pollution, air pollution, noise pollution and the spread of diseases like influenza A H1N1. Actually there are more than 3 ways to reduce pollution. You can find them in other web sites.
