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Topic: Potential


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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.
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.
The reason for the relation between the potential energy change of the cart and the work done upon it is the subject of Lesson 2.
www.glenbrook.k12.il.us /gbssci/phys/Class/energy/u5l1b.html   (993 words)

  
  Neuroscience for Kids - Action Potential
The resting membrane potential of a neuron is about -70 mV (mV=millivolt) - this means that the inside of the neuron is 70 mV less than the outside.
Also, when the threshold level is reached, an action potential of a fixed sized will always fire...for any given neuron, the size of the action potential is always the same.
Action potentials are caused by an exchange of ions across the neuron membrane.
faculty.washington.edu /chudler/ap.html   (767 words)

  
  Potential Energy
Potential energy is energy which results from position or configuration.
The potential energy U is equal to the work you must do to move an object from the U=0 reference point to the position r.
F in the definition of potential energy is the force exerted by the force field, e.g., gravity, spring force, etc. The potential energy U is equal to the work you must do against that force to move an object from the U=0 reference point to the position r.
hyperphysics.phy-astr.gsu.edu /hbase/pegrav.html   (544 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.
To determine the gravitational potential energy of an object, a zero height position must first be arbitrarily assigned.
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)

  
 Action potential at AllExperts
Action potentials can be created by many types of cells, but are used most extensively by the nervous system for communication between neurons and to transmit information from neurons to other body tissues such as muscles and glands.
The potential difference that exists across the membrane of all cells is usually negative inside the cell with respect to the outside.
Action potentials are largely dictated by the interplay between sodium and potassium ions (although there are minor contributions from other ions such as calcium and chloride), and are often modeled using hypothetical cells containing only two transmembrane ion channels (a voltage-gated sodium channel and a non-voltage-gated potassium channel).
en.allexperts.com /e/a/ac/action_potential.htm   (3542 words)

  
 About AP Potential
Based on AP Potential, we sent a few hundred letters to parents of students to indicate that their children were capable of success in AP courses and on AP exams.
Using a probability threshold that you select, AP Potential generates a roster of students at your school based on their PSAT/NMSQT scores who are likely to score a "3" or better on a given AP Exam.
AP Potential should be used in conjunction with the College Board's policy on AP student selection: "All students who are willing to accept the challenge of a rigorous academic curriculum should be considered for admission to AP courses.
www.collegeboard.com /counselors/app/about.html   (496 words)

  
 WP4 Dewpoint Water Potential Meter: Theory
The total water potential of a sample is the sum of four component potentials: gravitational, matric, osmotic, and pressure.
The water potential of a solid or liquid sample can be found by relating the sample water potential reading to the vapor pressure of air in equilibrium with the sample.
When the water potential of the sample and the headspace air are in equilibrium, the measurement of the headspace vapor pressure and sample temperature (from which saturation vapor pressure is calculated) gives the water potential of the sample.
www.decagon.com /wp4/wptheory.html   (606 words)

  
 MEMBRANE POTENTIAL
The concepts of potential and field, as those of energy and force are general and applicable to any system in which potential energy is stored, be it electrical, hydraulic, gravitational or chemical.
It is then shown that the chemical potential, or free energy per mole, is the potential whose corresponding field may be considered to generate a force responsible for the directed movement of the particles.
The electrical potential difference established across the membrane is the potassium equilibrium potential which depends on the ratio of the concentrations of the ion on both sides of the membrane.
www.fiu.edu /~cuervol/PhysiologicalMechanisms/MembranePotential.htm   (3143 words)

  
 Potential impacts of climate change
Even in the absence of such potentially additive or multiplicative local, regional or global effects such as urbanisation, desertification, deforestation and stratospheric ozone depletion, the projected pace of global warming is unprecedented in human history.
Although there are few analyses of such potential impacts, there is every reason to believe that if climate change were to occur at the high end of the projected ranges, the consequences could be serious for many countries, especially for developing countries.
Additional potential adverse effects include damage to housing, transportation and water supply, and expansion of salinised land with destruction of the coastal ecological environment and environmental protection facilities (Ye, 1990).
www.ciesin.org /docs/001-011/001-011.html   (13497 words)

  
 Fizzics Fizzle: Advanced: Electricity and Magnetism: Electric Potential   (Site not responding. Last check: )
It is the potential that the particle has to do work, and since it is in an electric field, electric potential seems like the most logical name for it.
The change in potential energy is the same whether the path taken is curvy or straight.
Now instead of dealing directly with potential energy of a charged particle, it might be better to just deal with the more general concept of potential energy per unit charge, which is called simply potential.
library.thinkquest.org /16600/advanced/potential.shtml   (474 words)

  
 GameDev.net - Motion Planning Using Potential Fields
To avoid bumping into obstacles we'll give them a very high potential value (higher than the highest accessible pixel in the grid) so our unit will never be tempted to enter such an object.
In this case a lower potential means a darker green.
In the potential field this is represented by a pixel that has neighbors which are either objects or are accessible but have a higher value, yet they are not our destination.
www.gamedev.net /reference/articles/article1125.asp   (1420 words)

  
 The Potential Difference
The change in the potential energy of a charge q when being moved from point A to point B, is the work done by an external force in moving the charge.
The potential at a point r of a positive point charge located at the origin is the work that must be done per unit charge in bringing a test charge from infinity to r.
The potential due to a point charge is proportional to the inverse of the distance from the point charge.
electron9.phys.utk.edu /phys136d/modules/m5/Potential.htm   (1634 words)

  
 Potential and Kinetic Energy
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.
When the water begins to fall, its potential energy is changed into kinetic energy.
www.usoe.k12.ut.us /curr/science/sciber00/8th/forces/sciber/potkin.htm   (201 words)

  
 The Potential Budgetary Impact of Recognizing Same-Sex Marriages
At your request, the Congressional Budget Office has prepared the enclosed analysis of the potential budgetary effects of recognizing same-sex marriages.
The potential effects on the federal budget of recognizing same-sex marriages are numerous.
CBO estimated that 83 percent of the potential beneficiaries would be people in opposite-sex rather than same-sex partnerships.
www.cbo.gov /showdoc.cfm?index=5559&sequence=0   (4222 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)

  
 Potential
The potential is an innocent storage facility, like a computer that is not to blame for a hateful document that is on its hard drive.
If a person with a weak ego is subjected to the force of someone else's projected potential, the projection can overpower that weak ego causing the person to accept the image of that projection in the place of his or her own ego.
As society changes, its potential changes and much of that sexuality has now been brought into the mainstream, while prudery is more likely to be in the potential.
members.tripod.com /david_gregory/potential.htm   (1841 words)

  
 Solve The Puzzle of Who You Are: Understanding & Finding Your Potential
Many people use the word potential yet few realize that your potential defines who you are, what you can excel at, and what is possible for you to become.
Work Potential: This defines the jobs, professions, trades and crafts you can excel at -- whether that is a healer, a farmer, a chef, an airline pilot, a computer programmer, a concert pianist or one of a thousand other careers.
Your potential is also revealed in your current life -- the things and places you feel drawn to and the things that make your heart beat faster when you think about them.
www.manifestyourpotential.com /en/welcome/potential/your_potential.htm   (905 words)

  
 Potential
Since these issues and predictions may influence the well-being of individuals (in some cases, they are used in trying to determine life or death decisions), it is incumbent upon psychologists to be very cautious in these types of assessments and predictions, even with substantial data and thorough comprehensive evaluations.
Encouraging the expression of conflict in a familial situation without assessing the potential for escalation to violence or abuse behavior.
However, without a thorough assessment of the potential for conflict to escalate into abuse or violence, encouraging a couple or family to express their anger to each other can be extremely dangerous.
www.apa.org /pi/potential.html   (3138 words)

  
 Redox Potentials
The redox potential is a measure (in volts) of the affinity of a substance for electrons — its electronegativity — compared with hydrogen (which is set at 0).
The difference in potential (ΔE) is, in a sense, a measure of the pressure between the two.
Link to an analysis of the energy changes occurring as covalent bonds are broken and formed during cellular respiration and photosynthesis.
users.rcn.com /jkimball.ma.ultranet/BiologyPages/R/RedoxPotentials.html   (553 words)

  
 Energy Efficiency Potential Assessments
As part of a recent analysis of the potential impacts of energy efficiency on Natural Gas Markets, we undertook a review of eleven studies that have been conducted on the technical, economic, and/or achievable potential for energy efficiency in the U.S. These studies cover many regions (e.g.
The median achievable potential is 24% for electricity (an average of 1.2% per year) and 9% for gas (an average of 0.5% per year).
This study prepared by SWEEP with analytical support from ACEEE and the Tellus Institute analyzes the technical and economic potential for improving the efficiency of electricity use in the Southwest region, assesses the impacts of these savings, and proposes policies.
www.aceee.org /energy/eeassess.htm   (960 words)

  
 The Atoms Family - The Mummy's Tomb - Raceways
To establish potential energy, you must first establish the conditions of the situation for energy.
The marble held at the end of the track with the established conditions of height or distance has the potential to MOVE the length of that established distance or height if a force, namely that of gravity, were to release the potential energy of the marble.
Once the marble is let go, the force of gravity (a pulling force) releases the potential of the marble to drop and the marble drops the established distance or height.
www.miamisci.org /af/sln/mummy/raceways.html   (527 words)

  
 SparkNotes: Potential: Gravitational Potential and Gravitational Potential Energy
As with any potential energy, we need to define some reference point as a zero.
We have defined our gravitational potential energy as the negative of this: as a mass moves towards the gravitating object it gains kinetic energy (it speeds up).
This value increases from a large negative value to a small negative value as the object is moved farther from M until it finally reaches zero at an infinite distance.
www.sparknotes.com /physics/gravitation/potential/section1.html   (740 words)

  
 The Potential of the Internet for Non-Profit Organizations   (Site not responding. Last check: )
The potential is growing as technology improves, enhanced features and applications are developed and the number of Internet users and their proficiency increases.
The Internet offers considerable potential for even small non-profits to engage a wider audience in their cause and is emerging as an essential tool to engage a greater number of people in becoming online activists and donors (Jamieson, 2000; Stewart, 1999).
The potential existed for the organization to use the Internet's potential for communication to support not only distribution of information on animal care but also the development of a community of practice to share knowledge and practical skills, capturing best practice to improve animal care and rescue methods.
www.firstmonday.dk /issues/issue7_8/spencer/index.html   (4857 words)

  
 potential - Search Results - MSN Encarta
Potential Energy, stored energy possessed by a system as a result of the relative positions of the components of that system.
Education, Postgraduate : education and potential income statistics
Education, Secondary : education and potential income statistics
encarta.msn.com /potential.html   (163 words)

  
 EPA Map of Radon Zones | Radon | Indoor Air Quality | Air | US EPA
The Map was developed using five factors to determine radon potential: indoor radon measurements; geology; aerial radioactivity; soil permeability; and, foundation type.
Radon potential assessment is based on geologic provinces.
EPA also recommends that this map be supplemented with any available local data in order to further understand and predict the radon potential of a specific area.
www.epa.gov /radon/zonemap.html   (511 words)

  
 Ranking Potential
Potential changes between points on a two dimensional surface are often represented by equipotential contour lines.
Rank the potentials at the points A, B, and C from lowest to highest for each simulation.
Note: Make sure the animation has started and that the simulation time is advancing as you drag and release the charge.
webphysics.davidson.edu /Applets/efield4/Potential.html   (104 words)

  
 Potential Sports Academy | Basketball   (Site not responding. Last check: )
Our structured environment allows individuals to reach their full potential as basketball players, while learning important life lessons such as sportsmanship, self discipline, goal setting, and perseverance.
In order to maximize each players potential, our programs are progressive and require a commitment from the student and his or her family.
Our mission at The Potential School of Basketball is to produce results through professionally designed programs that enhance basic skills, develop athletic ability, and teach discipline to enrich each student's quality of life.
www.potentialsportsacademy.com /sports/basketball/default.cfm   (303 words)

  
 TIB: Potential for Allergy to Natural Rubber Latex Gloves and other Natural Rubber Products
Among other issues, OSHA is assessing the accuracy of the TIB's use of dissimilar terms interchangeably, and examining the TIB's reliance on protein levels rather than allergen level as the relevant factor for determining the allergenicity of natural rubber latex gloves.
The third and potentially most serious type of reaction sometimes associated with glove use is a true IgE/histamine-mediated allergy (also called immediate or type I hypersensitivity) to glove protein [in the case of NRL allergy, to NRL protein(s)].
Primary prevention involves reducing potential development of allergy by reducing unnecessary exposure to NRL proteins for all workers.
www.osha.gov /dts/tib/tib_data/tib19990412.html   (3719 words)

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