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Topic: Law of conservation of energy

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	Conservation of energy - Wikipedia, the free encyclopedia
		Conservation of energy is possibly the most important, and certainly the most practically useful of several conservation laws in physics.
		This is obvious to a modern analysis based on the second law of thermodynamics but in the 18th and 19th centuries, the fate of the lost energy was still unknown.
		Conservation of energy can be shown through Noether's theorem to be the result of the time-invariance of the laws of physics (=time has no effect on any physical process).
	en.wikipedia.org /wiki/Conservation_of_energy (1556 words)

	Conservation of mass - Wikipedia, the free encyclopedia
		law of conservation of mass/matter states that the mass of a system of substances is constant, regardless of the processes acting inside the system.
		The law of conservation of mass fails for nuclear processes, where the equivalence of matter and energy, and hence conservation of energy, applies.
		The law was first clearly and unambiguously formulated by Antoine Lavoisier, who is often referred to as the father of modern chemistry.
	en.wikipedia.org /wiki/Law_of_Conservation_of_Mass (236 words)

	The law of conservation of energy (11-Sep-2003) (Site not responding. Last check: 2007-10-07)
		The law of conservation of energy: The total amount of energy in the universe is constant, although energy can be transformed from one form to another.
		The amount of energy you get from burning hydrogen and running a generator produces at most the amount of energy required to replace the energy used to split the water.
		The basic unit of energy is the joule, and the basic unit of power is the watt.
	www-formal.stanford.edu /pub/jmc/progress/firstlaw.html (1025 words)

	law of conservation of energy - Hutchinson encyclopedia article about law of conservation of energy
		Energy can be transferred from one form into another but cannot be created or destroyed.
		In a chemical reaction, for each component there may be changes in energy due to change of physical state, changes in the nature of chemical bonds, and either an input or output of energy.
		This is true outside of chemical reactions; for example the chemical energy of a battery is transferred into the electrical energy in a circuit, which can then be transferred into the heat and light energy of a bulb, but the total amount of energy is constant.
	encyclopedia.farlex.com /law+of+conservation+of+energy (190 words)

	LUXON THEORY - ENERGY
		Derivation of the law of conservation of energy
		This is the derivation of the law of conservation of energy from the luxon theory:
		Energy is the amount of the luxon momentum with the dimension J. Glueballs
	www.tardyon.de /luxon.htm (1330 words)

	Conservation law - Open Encyclopedia (Site not responding. Last check: 2007-10-07)
		In physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves.
		Noether's theorem expresses the equivalence which exists between conservation laws and the invariance of physical laws with respect to certain transformations (typically called "symmetries") (This only applies to systems describable by a Lagrangian).
		In fact, quantities that are conserved, the invariants, seem to preserve what one would like to call some kind of a 'physical reality' and seem to have a more meaningful existence than many other physical quantities.
	open-encyclopedia.com /Conservation_law (336 words)

	generic document for building HyperPhysics
		The conservation of energy principle is one of the foundation principles of all science disciplines.
		Conservation of Energy: the total energy of the system is constant.
		Conservation of Momentum: the mass times the velocity of the center of mass is constant.
	hyperphysics.phy-astr.gsu.edu /hbase/conser.html (631 words)

	Conservation law -- Facts, Info, and Encyclopedia article (Site not responding. Last check: 2007-10-07)
		In (The science of matter and energy and their interactions) physics, a conservation law states that a particular measurable property of an isolated physical system does not change as the system evolves.
		conservation of ((physics) the kinds of quarks and antiquarks) flavor (violated by the ((physics) an interaction between elementary particles involving neutrinos or antineutrinos that is responsible for certain kinds of radioactive decay; mediated by intermediate vector bosons) weak interaction)
		conservation of ((physics) parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system) parity
	www.absoluteastronomy.com /encyclopedia/c/co/conservation_law.htm (480 words)

	Energy Transformation on a Roller Coaster
		Potential energy - the energy of vertical position - is dependent upon the mass of the object and the height of the object.
		Kinetic energy - the energy of motion - is dependent upon the mass of the object and the speed of the object.
		The work-energy bar charts for the coaster car illustrate that the car's energy is transformed from potential to kinetic and vice versa; yet the total amount of mechanical energy remains the same during the course of the motion.
	www.glenbrook.k12.il.us /gbssci/phys/mmedia/energy/ce.html (931 words)

	[No title]
		This is the "law of conservation of energy"." ________________________________________________________________ Its interesting how a "rule" which might exist became a "LAW" of the conservation of mass, and a conviction and a "general notion" became the "LAW" of conservation of energy.
		Either the law of conservation of energy was wrong (which seemed unlikely), or the painfully collected evidence of geologists and biologists was wrong (which seemed unlikely), or there was some source of energy greater than any known in the 19th century, whose existence had somehow escaped mankind (which also seemed unlikely).
		Instead, it is more proper to speak of the conservation of energy, and to remember that mass was one form of energy and a very concentrated form........
	www.textfiles.com /bbs/KEELYNET/ENERGY/newman6.asc (1329 words)

	CATHOLIC ENCYCLOPEDIA: The Law of Conservation of Energy
		Potential energy, on the other hand, is exemplified by a wound-up spring, or by the bob of a pendulum when at its highest point; as the bob swings upwards its velocity and kinetic energy continuously diminish, whilst its potential energy is increasing.
		Energy is also recognized in the heat of a furnace, or the fuel of the same, in explosives, in an electric current, in the radiations of the ether which illuminates and warms the earth.
		Thus stated, the law may be admitted to hold the position of a fundamental axiom in modern physics; the nature of the evidence for it, we shall consider later.
	www.newadvent.org /cathen/05422a.htm (6294 words)

	Learn more about Conservation law in the online encyclopedia. (Site not responding. Last check: 2007-10-07)
		There are more subtle conservation laws in particle physics like those of spin, baryon number and more recently strangeness.
		For instance, time-invariance implies that energy is conserved, translation-invariance implies that momentum is conserved, and rotation-invariance implies that angular momentum is conserved.
		Such is the violation of parity conservation; apparently the universe has "handedness" (right versus left).
	www.onlineencyclopedia.org /c/co/conservation_law.html (348 words)

	Conservation of Energy
		The conservation of energy is a fundamental concept of physics along with the conservation of mass and the conservation of momentum.
		Energy can be converted from one form to another (potential energy can be converted to kinetic energy) but the total energy within the domain remains fixed.
		On this slide we derive a useful form of the energy conservation equation for a gas beginning with the first law of thermodynamics.
	www.grc.nasa.gov /WWW/K-12/airplane/thermo1f.html (672 words)

	ENERGY QUESTIONS (Site not responding. Last check: 2007-10-07)
		Nuclear energy is enormously cheaper, already in large scale use for generating electricity, and is better developed.
		Solar energy is a resource rather than a reserve in most places and for general purpose large scale use.
		The demand to reduce energy use is based on the fear of using nuclear energy.
	www-formal.stanford.edu /jmc/progress/energy.html (3540 words)

	BC Education - Physics Grade 11 - Energy (Law of Conservation of Energy) (Site not responding. Last check: 2007-10-07)
		It is expected that students will demonstrate an understanding of the law of conservation of energy and the relationships among work, kinetic energy, potential energy, and thermal energy.
		Students apply the law of conservation of energy to investigate situations in their community as well as in the laboratory.
		Students can demonstrate their knowledge of the law of conservation of energy by correctly using it in applied problem solving and by relating energy transformations to work done.
	www.bced.gov.bc.ca /irp/physics/11enla.htm (411 words)

	Energy Basics2: Kid's Zone: EnergyInfoNZ
		This energy is changed into sound energy when the book falls down with a loud thump.
		When energy is changed from one kind to another, the amount of energy stays the same.
		Energy can be changed from one form to another but it cannot be created or destroyed.
	www.energyinfonz.co.nz /home/KidsZone/basic2.html (103 words)

	Conservation of Energy (Site not responding. Last check: 2007-10-07)
		Gravitational potential energy comes from moving an object farther away from a source of a gravitational field.
		Elastic potential energy is energy that is stored in anything that is flexible, such as a spring or a rubber band.
		The total amount of mechanical energy in a system is the sum of the kinetic energy of the system and the potential energy of the system.
	webphysics.iupui.edu /152/152f03/152Basics/work/work2.html (406 words)

	conservation law -- Encyclopædia Britannica (Site not responding. Last check: 2007-10-07)
		The first kind of energy to be recognized was kinetic energy, or energy of motion.
		In certain particle collisions, called elastic, the sum of the kinetic energy of the particles before collision is equal to the sum of the kinetic energy of the...
		This law was deduced in 1834 by the Russian physicist Heinrich Friedrich Emil Lenz (1804–65).
	www.britannica.com /eb/article-9025938 (973 words)

	Proof the Law of Conservation of Energy is Wrong
		Of course the source of all this energy is the Earth’s gravitational field which most certainly will never dwindle despite the sheer number and mass of objects it may happen to attract towards itself.
		In the case of the classical equation for kinetic energy, K.E. = ½mv², it would appear that the law of conservation of energy is contravened every single time it is applied.
		This results from the fact that the kinetic energy is proportional to the velocity squared such that, for example, when the velocity is increased from v to 2v, four times as much kinetic energy is obtained than was previously the case when the velocity was just v.
	www.webspawner.com /users/energylaw (831 words)

	The Physics Classroom
		The significance of categorizing a force as internal or external is related to the ability of that type of force to change an object's total mechanical energy when it does work upon an object.
		The gain or loss in energy can be in the form of potential energy, kinetic energy, or both.
		Thus, energy is transformed from KE to PE (or vice versa); however, the total mechanical energy is conserved.
	www.physicsclassroom.com /Class/energy/U5L2a.html (1074 words)

	Limitation of the Law of Energy Conservation
		The law of conservation of energy is today an accepted doctrine that governs all energy-exchange phenomena of nature.
		At that stage (1931) when the law of conservation of energy was threatened, the existence of a new particle (neutrino), till then unknown, was postulated to save the law.
		However, when the spatial reality of fields and absence of energy at electron's centre are recognized, the law of conservation of energy becomes applicable only to the universe as a whole, though for the phenomena involving material interactions due to conservation of momentum, the energy conservation law will be valid also in isolated systems.
	depalma.pair.com /Tewari/Chap8.html (3478 words)

	Experiment 40. Law of conservation of energy (Site not responding. Last check: 2007-10-07)
		One of the fundamental laws in physics is that of the conservation of energy.
		Is the law of conservation of energy violated?
		Of course, some energy is again lost by friction and some energy is exchanged between the two objects, to be seen at the slightly lower height that the large mass reaches.
	outreach.web.cern.ch /outreach/public/nl/physics_fair/Exp39.html (418 words)

	Is the law of conservation of energy 'wrong' ? - Physics Help and Math Help - Physics Forums (Site not responding. Last check: 2007-10-07)
		The laws of conservation of mass and the laws of conservation of energy are (in the classroom) usually separated like so because the speeds you are dealing with are significantly smaller than c.
		In it's truest form, the law is written 'the law of conservation of mass-energy', to include both, although they are basically one in the same.
		For the most part the law of the conservation of mass is the same as the law of the conservation of energy.
	www.physicsforums.com /showthread.php?t=33573 (945 words)

	Conservation of Energy/Mass
		Energy can be changed in form, from one to another, without any loss to the Universe.
		This is called binding energy (an example of the strong nuclear force).
		These particles have a high kinetic energy which will cause the emission of a gluon, which changes the color of the quark but the total color of the quark, antiquark, and gluon will still cancel to zero.
	www.sciencebyjones.com /conservation_of_energy_mass.htm (548 words)

	Energy (Site not responding. Last check: 2007-10-07)
		Energy is everywhere in nature-sunlight, wind, water, plants, and animals.
		Law of Conservation of Energy- Energy can neither be created nor destroyed.
		Energy is always changing from one kind to another.
	www.nyu.edu /pages/mathmol/textbook/energy.html (403 words)

	[No title] (Site not responding. Last check: 2007-10-07)
		The Law of Conservation of Momentum is commonly split into two separate laws, one dealing with linear momentum and another with angular.
		Since energy is associated with momentum, this would create a violation in the Law of Conservation of Energy because final energy is greater than initial energy.
		Because Conservation of Energy is a stronger law than any assumption involving conservation of linear or angular momentum, this case necessitates that action and reaction cannot be equal, thus contradicting the common interpretation of Newton's Third Law of Motion.
	www.montalk.net /newton/newton2.html (2432 words)

	Conslaws (Site not responding. Last check: 2007-10-07)
		And any event or discovery that can show that a law as stated is less than accurate can cause the law to be rewritten, modified, or discarded and supplanted by a new law.
		Two fundamental laws will be presented in this unit, the Law of Conservation of Energy and the Law of Conservation of Momentum.
		Conservation in the context of physics does not usually mean saving or not wasting.
	wshs.wtvl.k12.me.us /~physics361/mechanics/conslaws.html (117 words)

	The Law of the Conservation of Energy
		The amount of energy that was present in the universe when the universe began is still the amount of energy in the universe.
		Whenever energy changes from one form to another some of the energy is changed to heat that radiates off the object like our bodies when we get hot from exercising.
		The energy in the gasoline is changed into mechanical energy that makes the automobile move down the road.
	boscobel.k12.wi.us /~schnrich/the_law_of_the_conservation_of_energy.htm (320 words)

	Law of Conservation of Matter and Energy (Site not responding. Last check: 2007-10-07)
		If however the mass of the oxygen of the air that combines with the metal is taken into consideration, it can be shown that the mass of the product is within the limits of accuracy of any weighing instrument, equal to the sum of the masses of the copper and oxygen that combine.
		This behavior of matter is in accord with what is called the Law of Conservation of Matter: During an ordinary chemical change, there is no detectable increase or decrease in the quantity of matter.
		The Law of Conservation of Energy states that energy cannot be created or destroyed, but can change its form.
	www.cartage.org.lb /en/themes/Sciences/Chemistry/Generalchemistry/Energy/LawofConservation/LawofConservation.htm (289 words)

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