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Topic: Potential energy

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	Potential Energy
		The gravitational potential energy of the massive ball of a demolition machine is dependent on two variables - the mass of the ball and the height to which it is raised.
		Elastic potential energy can be stored in rubber bands, bungee chords, trampolines, springs, an arrow drawn into a bow, etc. The amount of elastic potential energy stored in such a device is related to the amount of stretch of the device - the more stretch, the more stored energy.
		To summarize, potential energy is the energy which is stored in an object due to its position relative to some zero position.
	www.glenbrook.k12.il.us /gbssci/phys/Class/energy/u5l1b.html (993 words)

	Gravitational Potential Energy
		Gravitational potential energy is energy an object possesses because of its position in a gravitational field.
		The general expression for gravitational potential energy arises from the law of gravity and is equal to the work done against gravity to bring a mass to a given point in space.
		This is the form for the gravitational potential energy which is most useful for calculating the escape velocity from the earth's gravity.
	hyperphysics.phy-astr.gsu.edu /hbase/gpot.html (348 words)

	PowerPedia:Potential energy - PESWiki
		Potential energy is energy that is "captured" in an object, with the potential to be released.
		The electrical potential energy of an electrically charged object is defined as the work that must be done to move it from an infinite distance away to its present location, in the absence of any non-electrical forces on the object.
		The factors that affect an object's gravitational potential energy are: the mass of the object, the distance that it is raised, and the gravitational field strength.
	peswiki.com /index.php/PowerPedia:Potential_energy (2552 words)

	Energy - Engineering - A Wikia wiki (Site not responding. Last check: )
		Energy can be in several forms: mechanical potential—due to possible physical interactions with other objects (for example, gravitational potential energy); kinetic—contained in macroscopic motion; chemical—potential stored in chemical bonds between atoms; electrical—potential due to possible charge interactions; thermal—contained in the kinetic energy of individual molecules[[2]]; nuclear energy[[3]]—potential stored between constituents of atomic nucleus [[4]].
		In contrast to kinetic energy, which is the energy of a system due to its motion, or the internal motion of its particles, the potential energy of a system is the energy associated with the spatial configuration of its components and their interaction with each other.
		Internal energy is the kinetic energy associated with the motion of molecules, and the potential energy associated with the rotational, vibrational and electric energy of atoms within molecules.
	engineering.wikia.com /wiki/Energy (2603 words)

	The Physics Classroom
		The gravitational potential energy of the heavy ram of a pile driver is dependent on two variables - the mass of the ram and the height to which it is raised.
		Since the gravitational potential energy of an object is directly proportional to its height above the zero position, a doubling of the height will result in a doubling of the gravitational potential energy.
		Knowing that the potential energy at the top of the tall pillar is 30 J, what is the potential energy at the other positions shown on the hill and the stairs.
	www.physicsclassroom.com /Class/energy/U5L1b.html (1156 words)

	Potential energy - Wikipedia, the free encyclopedia
		The potential energy may then be defined as the work that must be done against a particular force – in these examples, gravitational, electrical or elastic force – so as to achieve that configuration.
		Equivalently, it is the energy required to raise the object from the reference level to the given height.
		Chemical energy is a form of potential energy related to the breaking and forming of chemical bonds.
	en.wikipedia.org /wiki/Potential_energy (2296 words)

	Energy (Site not responding. Last check: )
		Potential energy is a property of a system and not of an individual body or particle; the system composed of the Earth and the raised ball, for example, has more potential energy as the two are farther separated.
		What is commonly known as chemical energy, the capacity of a substance to do work or to evolve heat by undergoing a change of composition, may be regarded as potential energy resulting from the mutual forces among its molecules and atoms.
		The potential energy of a system of particles depends only on their initial and final configurations; it is independent of the path the particles travel.
	abyss.uoregon.edu /~js/glossary/energy.html (643 words)

	Bang! Boing! Pop! Energy
		Energy is a quantity associated with the state of a system.
		There are many forms of energy: kinetic energy (energy of motion), potential energy (energy stored in the interaction of an object with another object), chemical energy (energy stored in your body and in molecules), and heat energy are some examples.
		Before you let it go, the potential energy between the ball and earth is invisible, but once you release the ball, the energy is quite obvious in the motion of the ball.
	library.thinkquest.org /3042/energy.html (949 words)

	The Physics Classroom
		As the skiier begins the descent down the hill, potential energy is lost and kinetic energy (i.e., energy of motion) is gained.
		This energy state is maintained until the skiier meets a section of unpacked snow and skids to a stop under the force of friction.
		Potential energy is transformed into kinetic energy; and the potential energy lost equals the kinetic energy which is gained.
	www.physicsclassroom.com /mmedia/energy/se.html (711 words)

	Energy forms and definitions, kinetic energy and potential - basic energy concepts for teachers and students - from ...
		Energy forms and definitions, kinetic energy and potential - basic energy concepts for teachers and students - from ftexploring.
		Energy is being transferred, by the process of heat flow, from his body to the surrounding water.
		In fact temperature in a gas is often described (not defined!) as the average kinetic energy of all the atoms and molecules in the gas.
	www.ftexploring.com /energy/enrg-types.htm (2190 words)

	Energy - Succeed in Physical Science
		That energy is proportional to the square of the velocity.
		Chemical energy is potential energy until the chemical reaction puts atoms and molecules in motion.
		What this equation says is that the potential energy of an object of mass m is very great and would be as if it were moving at the speed of light (186,000 miles per second or 300,000 kilometer per second—very fast!).
	www.school-for-champions.com /science/energy.htm (1171 words)

	What_is_Energy
		Potential energy appears in many different forms, and is defined as the energy in matter due to its position or the arrangement of its parts.
		For an electrical appliance you plug in, the electrical potential energy is maintained by a spinning generator of a power plant, hydroelectric dam, or a windmill.
		Sound is made up of vibrations (put your hand on a stereo speaker), thermal energy consists of moving molecules in air or in an object, and mechanical energy is the combination of kinetic and potential energy of a moving object.
	www.uwsp.edu /cnr/wcee/keep/Mod1/Whatis/energyforms.htm (859 words)

	Electric energy and potential
		An object near the surface of the Earth has a potential energy because of its gravitational interaction with the Earth; potential energy is really not associated with a single object, it comes from an interaction between objects.
		A charge in a uniform electric field E has an electric potential energy which is given by qEd, where d is the distance moved along (or opposite to) the direction of the field.
		If you know the potential at a point, and you then place a charge at that point, the potential energy associated with that charge in that potential is simply the charge multiplied by the potential.
	physics.bu.edu /~duffy/PY106/Potential.html (1010 words)

	Kinetic and Potential Energy
		Energy is the sum of two types of energy: Potential and Kinetic Energy.
		Kinetic energy is energy due to motion while potential energy is a molecule's total energy due to its attractive force (stored energy).
		The energy of a molecular body is converted between these two forms with the total energy, of the moving molecule, remaining constant as long as no work is done.
	www.geocities.com /yummyphysics/energy.html (233 words)

	Potential Energy
		The work energy relation can be rewritten to take advantage of the fact that you can calculate the work of conservative forces form the potential energy.
		E is the sum of the kinetic energy and the potential energy of the conservative forces.
		Potential energy of a spring: The potential energy of a spring is given by
	em-ntserver.unl.edu /NEGAHBAN/EM373/note11/note.htm (272 words)

	[No title] (Site not responding. Last check: )
		The higher the train is lifted by the motor the more potential energy is produced; thus, forming a greater amount if kinetic energy when the train is dropped.
		There is very little potential energy at the bottom of the hill, but there is a great amount of kinetic energy.
		Since the mechanical energy is destroyed by the forces, the first hill is always the highest.
	library.thinkquest.org /2745/data/ke.htm (457 words)

	Energy -- from Eric Weisstein's World of Physics
		Energy is an abstract quantity of extreme usefulness in physics because it is defined in such a way that the total energy of any closed physical system is always constant (conservation of energy).
		Energy is measured in units of mass times velocity squared, and the MKS and cgs units of energy are the Joule and erg, respectively.
		In fact, the notion that heat is a form of energy was one of the most important developments in classical physics and thermodynamics.
	scienceworld.wolfram.com /physics/Energy.html (364 words)

	Types of Potential Energy
		Potential energy is a type of energy that is "hidden" in some way.
		Gravitational potential energy is typically converted into kinetic energy (an object falling) before it is converted into any other type of energy.
		Lot's of heat and/or light energy is released when very strong bonds form, because much of the chemical energy is converted to heat and/or light energy.
	chemsite.lsrhs.net /chemKinetics/PotentialEnergy.html (449 words)

	ippex online
		Energy is often defined as "the ability to do work," and Energy makes the world go around, you might say.
		The unit of energy with which you are probably most familiar is the calorie.
		There are many different states of energy: nuclear energy, chemical energy, potential and kinetic energy, to name a few.
	ippex.pppl.gov /interactive/energy (208 words)

	Potential (Site not responding. Last check: )
		Since it requires energy to lift an object through a gravitational field it follows that the potential of an object in the Earth's gravitational field must increase with height.
		Now, it is a fundamental law of nature that systems always tend towards their lowest potential energy configuration, within the constraint of conservation of energy.
		The potential is convenient for describing the environment of a quantum mechanical particle because it allows us to assign a simple scalar quantity to each point in space, rather than keeping track of vector forces acting on a particle whose position may not be precisely known.
	newton.ex.ac.uk /research/qsystems/people/jenkins/mbody/potential.html (395 words)

	The Energy Story - Chapter 1: What Is Energy?
		Btu is the amount of heat energy it takes to raise the temperature of one pound of water by one degree Fahrenheit, at sea level.
		One joule is the amount of energy needed to lift something weighing one pound to a height of nine inches.
		If you overeat, the energy in food is not "burned" but is stored as potential energy in fat cells.
	www.energyquest.ca.gov /story/chapter01.html (1288 words)

	Chemical potential - Wikipedia, the free encyclopedia
		The chemical potential is a fundamental parameter in thermodynamics and it is conjugate to the particle number.
		The chemical potential of an atom is sometimes said to be the negative of the atom's electronegativity.
		Being a function of internal energy, chemical potential applies equally to both fermion and boson particles, That is, in theory, any fundamental particle can be assigned a value of chemical potential, depending upon how it changes the internal energy of system to which it is introduced into.
	en.wikipedia.org /wiki/Chemical_potential (1697 words)

	Potential Energy
		Potential energy exists whenever an object which has mass has a position within a force field.
		The potential energy of an object in this case is given by the relation:
		Kinetic Energy exists whenever an object which has mass is in motion with some velocity.
	jersey.uoregon.edu /vlab/PotentialEnergy (490 words)

	Potential and Kinetic Energy (Site not responding. Last check: )
		As the rubber band is released, potential energy is changed to motion.
		As it starts to fall the potential energy begins to be changed into kinetic energy.
		This change in energy also happens at Niagara Falls where it is used to provide electricity from the transformation of mechanical and electromagnetic energy to parts of the northeastern United States.
	www.usoe.k12.ut.us /curr/science/sciber00/8th/forces/sciber/potkin.htm (201 words)

	Convective Available Potential Energy
		The convective available potential energy or CAPE, is used by weather officials and storm chasers to understand what the potential might be for severe weather, and how powerful those storms might become if they do materialize.
		The potential energy available for convection is expressed mathematically using a standard measurement of energy represented as Joules Per Kilogram.
		An energy of 1 joule is expended in moving an object through 1 meter when it is opposed by a force of 1 NEWTON.
	www.tornadochaser.net /cape.html (663 words)

	Gravitational Potential Energy
		To see what this potential function looks like on a larger scale, going far from the Earth, it is necessary first to decide where it is most natural to set it equal to zero.
		The above is a map of the potential energy “hill” to be climbed in going away from the Earth vertically upwards from any point.
		the total energy in a circular orbit is half the potential energy.
	galileo.phys.virginia.edu /classes/152.mf1i.spring02/GravPotEnergy.htm (994 words)

	Physics Demonstration Videos
		At the bottom of the hill, the energy is all kinetic.
		At the top of the loop and the top of the short side, the energy is split between potential and kinetic.
		At various points on the track, the car will have the same total energy, but it will be split into kinetic and potential energies dependent on its height and velocity.
	www.wfu.edu /physics/demolabs/demos/avimov/bychptr/chptr3_energy.htm (954 words)

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