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What is Energy used for?

After energy is used to overcome air resistance, what happens to the energy?

  • From the Principle of Energy Conservation, we know that energy can't just disappear. Most of the energy used to propel a car at highway speeds goes into overcoming air resistance. Then what happens to this energy? Follow the energy as far as you can.

  • Answer:

    the kinetic energy of car is converted in friction energy of the air + kinetic energy of air in small amount also.. which kinetic energy either again hits the another layer of air and creates momentum of air and so on and on until all energy is converted in friction energy means in heat.... this heat will cause boiling of water and kinetic energy is utilized to evaporation of water ...and rain falls...

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it changes into heat.

reza_hemmatdj

It begins a swirling pattern that goes as far as the energy permits...for example, there is a swirling pattern behind vehicles (try driving right behind a semi and you'll know too well) and off the wings of airplanes.

Flowerlady

It makes hot air. :-)

amansscientiae

It increases kenetic energy of the air which is reflected in higher temperature of the air as a net affet.

Yogy

It descends to unavailability using the mechanisms of turbulence and the kolmogorov energy cascade. http://www.lsw.uni-heidelberg.de/users/sbrinkma/thesis/cascade.jpg The energy is broken into smaller and smaller bits until reassembling it takes more energy than you could get out of the total dissipated energy. http://images.google.com/imgres?imgurl=http://caltechbook.library.caltech.edu/22/01/figs/fig507.jpg&imgrefurl=http://caltechbook.library.caltech.edu/22/01/chap5.htm&h=332&w=443&sz=15&hl=en&start=45&um=1&tbnid=nw01RF_8xLAwBM:&tbnh=95&tbnw=127&prev=/images%3Fq%3Dturbulent%2Bcascade%2Benergy%2Bvortex%26start%3D40%26ndsp%3D20%26svnum%3D10%26um%3D1%26hl%3Den%26rlz%3D1B3GGGL_en___US231%26sa%3DN You might have fun reading up on terms like availability (exergy) etc... http://en.wikipedia.org/wiki/Exergy

Curly

It is converted to the kinetic energy of the air moving out of the way of the car. Remember that a lot of energy in converted to heat which is radiated to the air around the car.

I ain't nothing but a hound dog.

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