Noun
- The impetus behind all motion and all activity.
- The capacity to do work.
- A quantity that denotes the ability to do work and is measured in a unit dimensioned in mass × distance²/time² (ML²/T²) or the equivalent.
- Units:
- ::SI: joule (J), kilowatt-hour (kW·h)
- ::CGS: erg (erg)
Read full definition at wiktionary.org
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...thumb|right|350px| is the electric breakdown of air by strong electric fields and is a flow of energy. The electric potential energy in the atmosphere changes into heat, light, and sound which are other forms of energy.] Read full entry
This entry is from Wikipedia,the leading user-contributed encyclopedia.It may not have been reviewed by professional editors(See full disclaimer)
- 1.Energy - Wikipedia, the free encyclopedia
- Free encyclopedia article explaining the scientific notion of energy. ... 2 Energy in various contexts since the beginning of the universe ...
- http://en.wikipedia.org/wiki/E
nergy
- 2.U.S. Department of Energy
- ... site of the U.S. Department of Energy (DOE), offering news and information about energy sources, energy efficiency, the environment, national security, and ...
- http://www.energy.gov/
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ENERGy!!!!!?
i need to know what can make
you reeeeeeally hyper,
- any foods?
- any drinks?
- any energy drinks? (im
looking mostly for answers
with energy drinks)
no alcohols or drugs please :D
anything you could have at
your house?
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red bull, starbucks doubleshot |
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What happen to heat energy According to the conservation
of energy, energy is
transformed into other forms
of energy. In real cases, for
example, in engines, not all
chemical energy (from the
fuel) is converted to kinetic
energy (correct me if I'm
wrong) because some of the
input energy is dissipated as
heat energy. So logically, the
heat energy is released to the
atmosphere. What happens to
the heat energy after that?
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The problem is that heat energy is dissipated, i.e. heat energy that is produced spreads out. The radiators in a lecture room produce heat energy. This heat energy dissipates and the surrounding area becomes very slightly warmer etc. This dissipated heat energy cannot be regained in a useful form. |
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How is energy conserved when a I know that when an object is
held at a particular height
above the Earth, it has a
quantity of potential energy
associated with it, but no
kinetic energy. When the
object is dropped, it loses
potential energy and gains
kinetic energy, thereby
ensuring that energy is
conserved. However, I've never
understood what happens when
the object finally strikes the
ground; at this point, it has
no potential and no kinetic
energy. I'm sure some of it is
released as heat and sound,
but that can't account for all
the energy, can it?
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If the collision between the object and the ground were perfectly elastic, you would find that the object would bounce back up, from the ground, to the initial height that it was dropped from. However, when the collision is inelastic (like the case you are referring to), energy is dissipated by three means: compression waves generated in the air (sound), deformation of the objects involved in the collision, and some heat release due to friction. Energy is this case (as in every case) is conserved, the problem is that useful energy has been turned into very useless forms of energy - heat, sound, and deformed objects. |
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Name: 079596978
Salut!Mie dorde tine!Vreau sa spun ca tu esti totul pentru mine!Demult am vrut sati scriu dar acum m-am hotarit sa-ti scriu!Pa!
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i want to make my payment where i need to go i need help. i cant not found where are i need to mqke the payment