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AP Physics Flashcards

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4209602816VectorA quantity that involves both magnitude and direction.0
4209603357ScalarA quantity that does not involve direction.1
4209605531DisplacementA net distance traveled including direction; An objects change in position.2
4209607757Two-Dimensional VectorsVectors that lie flat in a plane and can be written as the sum of a horizontal vector and a vertical vector.3
4209616011Unit VectorsSpecial vectors that have a magnitude of 1. These include horizontal basis vector, i, and vertical basis vector, j.4
4209620608PositionAn objects location in a certain space.5
4209630641Newton's First LawAn object will continue in its state of motion unless compelled to change by a force impressed upon it. Also called Law of Inertia6
4209634575InertiaAn object's natural resistance to changes in their state of motion.7
4209637694Newton's Second LawPredicts what will happen when an unbalanced force does act on an object: the object's velocity will change / the object will accelerate.8
4209645528Newton's Third LawTo ever action, there is an equal but opposite reaction.9
4209648546WeightThe gravitational force exerted on an object by the Earth (or by whatever planet it happens to be on).10
4209651055Normal ForceThe component of the contact force that is perpendicular to the surface. (When an object is in contact with a surface, the surface exerts a contact force on the object.)11
4209656331Friction ForceThe component of the contact force that is parallel to the surface. (When an object is in contact with a surface, the surface exerts a contact force on the object).12
4209659103Static FrictionA type of friction that occurs when there is no relative motion between the object and the surface (no sliding).13
4209659518Kinetic FrictionA type of friction that occurs when there is relative motion (when the surface is sliding).14
4209660118Coefficient of FricitonRepresents the nature of surfaces.15
4209691717Law of Conservation of EnergyEnergy can not just appear out of nowhere nor can it disappear in a closed system; it must always take on another form.16
4209693902WorkThe application of force over a distance and the resulting change in energy of the system that the force is acted on.17
4209697314Total Mechanical EnergyThe sum of an object's kinetic and potential energies.18
4209707625PowerThe rate at which work gets done, or energy gets transferred.19
4209710436ImpulseThe product of force and the time during which it acts.20
4209711618Impulse-Momentum TheoremAnother way of writing Newton's Second Law. (Written J = change in momentum)21
4209714732MomentumA vector quantity given by p = mv22
4209717015Uniform Circular MotionWhen an objects speed around its path is constant.23
4209717923Centripetal AccelerationWhen the acceleration vector points toward the center of the circle. The thing that turns the velocity vector to keep the object traveling in a circle.24
4209726289Newton's Law of GravitationAny two objects in the universe that exert and attractive force on each other - called the gravitiational force - whoes strength is proportional to the product of the object's masses and25
4209658367KinematicsThe mathematical tools for describing motion in terms of displacement, velocity, and acceleration.26
4258832327Potential EnergyThe energy of an object or system has by virtue of its position of configuration.27
4258834460Total Mechanical EnergyThe sum of an objects kinetic and potential energies.28
4258836978Law of Conservation of Total EnergyK(initial)+U(Initial) = K(final)+U(final)29
4258841384Elastic CollisionA type of collision in which the objects bounce perfectly off each other in opposite directions. Kinetic Energy is conserved. Momentum is conserved.30
4258848495Inelastic CollisionA type of collision in which the objects travel in the same direction after the collision. Kinetic Energy is lost. Momentum is conserved.31
4258855008Perfectly Inelastic CollisionThe objects stick together and travel in the same direction. Greatest kinetic energy is lost. Momentum is conserved.32
4258858252Law of Conservation of MomentumThe momentum before equals the momentum after. total p (initial) = total p (final).33
4258861535Uniform Circular MotionThe objects speed around its path (constant).34
4258863312Centripetal ForceThe force that produces centripetal acceleration. Pulls on object toward the center.35
4258866438Universal Gravitational Constant9.81, signified by the capital letter G.36
4258954748TorqueThe measure of a force's effectiveness at making an object spin or rotate.37
4258959775Translational EquilibriumOccurs when the sum of the forces acting on an object are zero.38
4258966346Rotational EquilibriumIf the sum of the torques acting on an object is zero.39
4258967544Static EquilibriumState of equilibrium when an object is at rest.40
4258973953Rotational InertiaThe tendency of an object in motion to rotate until its acted upon by an outside force.41
4262314390Equilibrium PositionWhen a spring is neither stretched nor compressed it is said to be in it ___________ ____________.42
4262320142Hooke's LawF = -kx43
4262335855Simple Harmonic MotionAny vibrating system for which the restoring force is directly proportional to the negative of the displacement is said to exhibit _________________ _______________ ______________.44
4262400442AmplitudeThe maximum displacement from equilibrium.45
4262403212Period (T)The amount of time it takes to complete a cycle.46
4262405855FrequencyThe number of cycles that can be completed per unit time.47
4262410600Simple PendulumConsists of a weight of mass attached to a string or a mass-less rod that swings, without friction, about the vertical equilibrium position.48
4262419986Mechanical WaveA disturbance transmitted by a medium from one point to another, without the medium its self being transported.49
4262424960CrestsThe points at which the rope has its maximum vertical displacement above the horizontal.50
4262428299TroughsThe points at which the rope has its maximum vertical displacement below the horizontal.51
4262436375Transverse WaveA wave vibrating perpendicular to the direction in which it propagates (travels horizontally).52
4262446990Superposition (Of Waves)When two or more waves meet, the displacement at any point of the medium is equal to the algebraic sum of the displacements due to the individual waves.53
4262453939Constructive InterferenceWhen two waves has displacements of the same sign when they overlap, the combined wave will have a displacement of greater magnitude than either individual wave.54
4262461885Destructive InterferenceWhen two waves have opposite displacements and meet, the combined waveform will have a displacement of smaller magnitude than either individual wave.55
4262472905InphaseWhen two waves meet and the crest meets the crest and trough meets trough perfectly. These waves constructively interfere and the amplitude of the combined wave will be the sum of the individual amplitudes.56
4262483670Out of PhaseWhen two waves meet and the crest of one meets the trough of the other and vice versa. These waves will destructively interfere completely and the amplitude of the combined wave will be the difference between the individual amplitudes.57
4262495524Standing WaveThe wave oscillates vertically and remains fixed. The crests and troughs no longer travel down the length of the string.58
4262510258Longitudinal WaveA wave the travels and oscillates in the same direction. (i.e sound waves)59
4262522923IntensityThe rate at which sound waves transmit energy, per unit area.60
4262536179Decibels (dB)The loudness of sound.61
4262539294BeatWhen two waves interfere constructively, producing an increase in sound level.62
4262549494Beat FrequencyEqual to the difference between the frequencies of the two combining sounds.63
4262557038Doppler EffectThe shift in frequency and wavelength that occurs when the source and detector are in relative motion.64
4262632092Electric ChargeA quality had by protons and electrons that gives them an attractive force.65
4262637951ChargedOccurs when an imbalance between the numbers of protons and electrons exists.66
4262674124Coulomb's Law67
4262682793Electric FieldThe presence of charge creates an ___________ ___________ in the space that surrounds it.68
4262686295Gravitational FieldThe space surrounding the Earth a permeated by a ___________ ____________ that's created by the Earth.69
4262692396Electric DipoleWhen two equal but opposite charges form a pair.70
4262697422ConductorsMaterials that permit the flow of excess charge.71
4262699534InsulatorsA material whose internal electric charges do not flow freely.72
4262732124SuperconductorA material that offers no resistance to the flow of charges.73
4262746617Ohm's Law74
4262761302Direct CurrentWhen a current always travels in the same direction through the pathway.75
4262768478VoltageThe thing that creates current.76
4262786407Kirchhoff's First Law (The Junction Rule) (The Node Rule)Says that the total current that enters a junction must equal the total current that leaves the junction.77
4262792618Kirchhoff's Second Law (The Loop Rule)Says that the sum of the potential differences (positive and negative) That traverse any closed loop in a circuit must be zero.78
4269601369Net ForceThe single force that could replace all the individual acting on an object and produce the same effect. Forces acting in the same direction add to together to make this.79
4269661215Restoring ForceAny force that always pushed an object toward an equilibrium position.80

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