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26 Cards in this Set
- Front
- Back
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force |
push or pull on an object |
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potential energy
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the energy a system has due to its shape, position. The potential to do work. (stretched exercise band)
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electrical potential energy
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the ability to move an electric charge from one point to another
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chemical potential energy
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energy stored in chemical bonds
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gravitational potential energy
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Potential energy that depends on the height of an object
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kinetic energy
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Energy that an object has due to its motion
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thermal energy
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Another kind of kinetic energy. The energy of motion in the molecules of a substance. (fire, furnace, hot cup of coffee)
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law of conservation of energy
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The law that states that energy cannot be created or destroyed, it can only change form.
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gravitational force
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a force that attracts any objects with mass
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projectile motion
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The curved path an object follows when thrown or propelled near the surface of the Earth.
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satellite
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An object in stable orbit around a larger astronomical body.
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direct relationship
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the connection between two variables that shows the same effect (they both increase or both decrease)
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mass
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the quantity of matter in an object |
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inverse relationship
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relationship in which when one element decreases, the other element increases
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Newton's Law of Universal Gravitation
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states that every object attracts every other object with a force that for any two objects is directly proportional to the mass of each object
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Coulomb's law of Electrical Force
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The relationship among force, charge, and distance. If the charges are alike in sign, the force is repelling; if the charges are unlike, the force is attractive.
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vector |
any quantity that involves a magnitude and a direction (acceleration, velocity, displacement) |
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scalar
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any quantity that does not include a direction (temperature, speed) |
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inverse square law
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Law relating the intensity of an effect to the inverse square of the distance from the cause: intensity ~ 1/distance2 |
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magnetic force
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Between magnets, it is the attraction of unlike magnetic poles for each other and the repulsion between like magnetic poles. Between a magnetic field and a moving charge, it is a deflecting force due to the motion of the charge; the deflecting force is perpendicular to the velocity of the charge and perpendicular to the magnetic field lines.
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magnetic field
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The region of magnetic influence around a magnetic pole or a moving charged particle.
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electrical force
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The attractive or repulsive interaction between any two charged objects |
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resistance
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a material's opposition to the flow of electric current. Measured in ohms
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current
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a measure of the flow of charges through a circuit over some time. Measured in Amps
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gravitational field |
the force field that exists in the space around every mass or group of masses |
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electrical field |
the force that fills the space around every electric charge or group of charges |
