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AP Physics B Vocabulary Flashcards

from princeton review

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732703940vectorquantity with magnitude and direction
732703941scalarquantity with only magnitude
732703942unit vectorsvectors in the x or y axis that have a magnitude of 1
732703943vector componentsthe vertical and horizontal vector that makes up the resultant vector
732703944Kinematicsthe study of an object's motion in terms of its displacement, velocity, and acceleration.
732703945Average speedratio of the total distance traveled to the time required to cover that distance
732703946Velocityratio of displacement to time
732703947accelerationchange in velocity over time
732703948launch anglethe angle that the initial velocity vector makes with the ground
732703949Dynamicsthe study of why things move the way they do
732703950forcean interaction between two bodies
732703951Inertiathe natural resistance to changes in state of motion
732703952massthe quantitative measure of its inertia. How much matter is in an object
732703953action/ reaction pairthe two forces caused by a certain interaction between bodies
732703954newtonthe measurement of a force (in kgm/second squared)
732703955weightthe gravitational force exerted on a mass by the Earth
732703956Free Body Diagramthe diagram of all the forces acting on an object (also known as the force diagram)
732703957Normal Forcethe force perpendicular to the surface (abbreviated N)
732703958Friction Forcecomes from electrical interactions between atoms of which the object is composed and those of which the surface is composed
732703959Static Frictionthe resistance met when initially pushing and object
732703960Kinetic (Sliding) Frictionthe resistance met after the object is in motion
732703961Coefficient of frictionthis is mu. It has no units and represents the nature of two contacting surfaces
732703962PulleysDevises that change the direction of the tension force in the cords that slide over them
732703963Energythe measurement of change (the ability to do work)
732703964Workthe application of force over a distance
732703965Kinetic Energythe amount of energy an object in motion has (defined by 1/2 mv squared)
732703966Potential Energythe amount of energy an object or system has bey virtue of its position or configuration.
732703967Gravitational Potential Energythe energy stored by virtue of an object's position in a gravitational field. (defined by mgh)
732703968Conservative Forcesa force that does not depend on the path taken to reach a certain distance
732703969Mechanical Energythe summation of the Kinetic and Potential energies
732703970PowerThe rate at which work is done
732703971Wattthe unit of power. It is in joules per second
732703972Linear Momentumthe product of mass and velocity. (Newton's words: the alteration of motion is proportional to the force impressed)
732703973Impulsethe change in momentum
732703974Collisionsan impact between two objects
732703975Elastic CollisionA collision in which kinetic energy is conserved
732703976Inelastic CollisionA collision in which kinetic energy is different after the collision
732703977Uniform Circular Motionthe state where an object travels and a constant tangential velocity in a circle
732703978Centripetal Accelerationthe acceleration vector that keeps the object moving in a circle
732703979Centripetal ForceThe force required for an object to stay in circular motion
732703980Torquethe force applied to a pivot point to cause circular motion
732703981Net TorqueThe sum of all torque acting on an object
732703982Translational Equilibriumthe state when the sum off all the forces acting on an object is zero
732703983Rotational Equilibriumthe state when the sum of all the torques acting on an object is zero
732703984Static Equilibriumthe state when the object is at rest
732703985Gravitational ForceThe force between two objects in the universe. (always is attractive)
732703986Spring ConstantThe measurement of how stiff the spring is
732703987Equilibrium positionthe position at which the net force on the block is zero
732703988Restoring ForceA force that acts in a way to return to its original state
732703989Ideal (or Linear) SpringSprings that obey Hooke's Law
732703990Elastic Potential EnergyThe potential energy that a spring contains
732703991Cyclea round-trip from a position back to the same position
732703992Periodthe time for one cycle
732703993Frequencythe amount of cycles per time (normally in seconds)
732703994Hertz (Hz)The unit for one cycle per second
732703995Simple Penduluma system that consists of a weight attached to a string or a mass-less rod that swings, without friction, about the vertical equilibrium position.
732703996Fluidssubstances that can flow. Can be a gas or a liquid
732703997Pressurethe force distributed over area
732703998Specific GravityThe ratio of density of a substance to the density of water
732703999PascalThe SI unit for pressure, units are Newtons per square meter
732704000AtmosphereThe non-SI unit for pressure, but is equal to one at sea level.
732704001Hydrostatic PressureThe pressure caused by a standing liquid
732704002Gauge PressureThe difference between total pressure and atmospheric pressure. In essence, is the pressure caused by the substance itself.
732704003Buoyant ForceThe force caused by the difference in pressure from the top to the bottom. Archimedes' Principle proves this
732704004Flow Ratethe volume of fluid that passes a particular point per unit time
732704005Viscositythe force of cohesion between molecules in a fluid. Is like internal friction
732704006StreamlineA line in the fluid that has a current passing through it. (as a noun)
732704007Laminar (streamline)A condition that results from the individual streamlines don't curl up into vortices but are steady and smooth. (as an adjective)
732704008Turbulenta condition that results from the rapid swirling of a streamline into whirlpools. The flow is unpredictable.
732704009Heatthermal energy that is transmitted from one body to another.
732704010Thermal Energythe random motion of a substance's molecules are a measurement of this
732704011Temperaturethe measure of the concentration of an object's internal thermal energy
732704012FahrenheitThe scale of temperature where water freezes at 32 degrees and boils at 212
732704013Celsius (Centigrade)The scale of temperature where water freezes at 0 degrees and boils at 100
732704014Absolute Temperature Scale (Kelvin)The scale of temperature where water freezes at 273.15 and boils at 373.15. Also assigns 0 to the lowest theoretically possible temperature
732704015Triple PointThe point at which the solid, liquid, and vapor states are possible (in temperature)
732704016Solid, Liquid, Gas (Vapor)The three states of matter
732704017Melts (liquifies)the process where a solid turns into a liquid
732704018Freezes (solidifies)the process where a liquid turns into a solid
732704019Evaporatethe process where a liquid turns into a vapor (or gas)
732704020Condensatethe process where a vapor (or gas) turns into a liquid
732704021Sublimationthe process where a solid tuns into a vapor (or gas)
732704022Depositionthe process where a vapor (or gas) turns into a solid
732704023Specific HeatAn intrinsic property of the substance that dictates its ability to transfer thermal energy
732704024Latent Heat of TransformationThe amount of heat required to go through a phase change (can be of fusion or vaporization)
732704025Coefficient of linear expansionThe proportionality constant for a specific material that allows for expansion in a line (sometimes contraction)
732704026Coefficient of volume expansionThe proportionality constant for a specific material that allows for the expansion in three dimensions.
732704027MoleA simplification of the number of molecules in a substance. (could have been for the mathematically challenged)
732704028Avogadro's constantThis is the exact number of molecules in one mole. Is equal to 6.03 times ten to the twenty-ninth.
732704029Universal Gas ConstantThis is equal to 8.31 Joules per mole Kelvin
732704030Root-Mean-Square SpeedThis is the average velocity of the gas molecules in a vapor. Found by squaring, averaging, and then Square rooting the velocities of the gas molecules.
732704031Molar MassThe amount of mass in one mole of a substance
732704032LiterThe measurement of volume that is equal to 10 to the negative third cubic meters
732704033STP (Standard Temperature and Pressure)The condition where temperature is 0 degrees Celsius and 1 atmosphere
732704034ThermodynamicsThe study of the energy transfers involving work and heat, and the resulting changes in internal energy, temperature, volume, and pressure
732704035P-V DiagramThe graph of pressure versus volume in a gas.
732704036State of a gasThe exact pressure, volume, and temperature of a gas
732704037Internal energyA fundamental property of a gas that describes its behavior
732704038IsochoricA change in a gas that changes everything but volume
732704039cyclical processA process that begins and ends in the same state (of a gas)
732704040isothermNo variation of temperature takes place during this process, essentially ∆U is the same
732704041AdiabaticThe change in a gas when Q is equal to 0
732704042Carnot EngineA heat engine that uses the Carnot cycle to have maximized efficiency
732704043Thermal EfficiencyEqual to the ratio of work in to work out in a heat engine
732704044Absolute ZeroThe theoretically temperature that all particle motion stops
732704045Electrical ChargeThis causes the attraction or repulsion in electricity
732704046ChargedThe state of electricity when there is an imbalance of protons and electrons
732704047Ionizationthe removal or addition of charged objects to form an ion
732704048Elementary ChargeThe magnitude of charge on an electron or proton
732704049QuantizedThis is how we describe charge, it is because we can only add or subtract charge in increments of e
732704050Electric forceThe force of attraction or repulsion created by two charged substances
732704051CoulombsThe SI unit for Charge
732704052Permittivity of free spaceThe fundamental constant that describes permittivity of a vacuum
732704053SuperpositionThe addition of vectors in a system (need to consider angles as well
732704054Gravitational Fieldthe field of attractive force caused by gravity near a large mass
732704055Electric FiledThe field of attractive or repulsive force caused by charge in a mass
732704056Electric Field VectorThis vector represents the strength of the electric force at a point.
732704057Electric DipoleThe relation of two opposite and equal charges
732704058ConductorsMaterials that permit the flow of excess charge
732704059InsulatorsMaterials that deny the flow of charge, they hold their electrons closely
732704060SemiconductorsMaterials that are less conductive than metals but not insulators
732704061SuperconductorMaterials the offer absolutely no resistance to the flow of charge, a perfect conductor of charge
732704062Electrical Potential EnergyThe amount of energy of a charged particle in an electric field solely dependent on the particle's position
732704063Electric PotentialThe electric potential energy per unit charge
732704064VoltThe unit that describes Electrical Potential. Units are Joules per coulomb
732704065Equipotential SurfacesSurfaces of constant potential
732704066CapacitorThis is created by two conductors separated by some distance that carry equal and opposite charge
732704067Parallel-plate CapacitorsA type of capacitor that is described by two metal plates in parallel
732704068CapacitanceThe measurement of the capacity for holding charge.
732704069FaradThe unit for measuring capacitance. Units are coulombs per volt
732704070Electrical CurrentThe ordered motion of charge through a conductor
732704071Drift Speedthe speed of the electrons that have to go through the sea of atoms in a wire. This is relatively slow compared to the speed of the electric field that travels through the wire
732704072Average Currentthe amount of charge that crosses an imaginary plane in a certain time interval
732704073AmpereThe SI unit for charge, is in Coulombs per second
732704074ResistanceThe stemming of the flow of charge. Is related to potential and current through Ohm's Law.
732704075OhmThe measurement of resistance. It is measured in volts per amp.
732704076ResistivityThe intrinsic property that produces resistance in a material
732704077CircuitA system of current carrying wires connected to a voltage source in a closed pathway
732704078Direct CurrentA circuit where all the current is moving in one direction
732704079Electromotive Force (EMF)The potential different between the poles of the voltage source. Isn't really a force, it is the work done per unit charge, measured in Volts.
732704080ResistorsDevices that apply resistance to a circuit to manage current
732704081PositiveThe terminal with higher potential
732704082NegativeThe terminal with lower potential
732704083SeriesThe circuit type where one resistor is connected one after another
732704084ParallelThe circuit type where one resistor is connected side by side
732704085Internal ResistanceThe intrinsic amount of resistance in a material used to move current
732704086Terminal VoltageThe effective voltage provided by the battery to the rest of the circuit
732704087VoltmeterThe device used to measure the voltage between two points in a circuit
732704088AmmeterThe device used to measure current of a circuit
732704089GroundedThe condition of a circuit where the wire connects to a ground
732704090GroundThe place where potential is considered to be zero
732704091Magnetic FieldsThe field that causes a magnetic force (can be created by a magnet or current through a wire)
732704092Tesla (T)The SI unit for magnetic field. Units are Newton per ampere-meter
732704093Gauss (G)A unit for magnetic field, non-SI. Equals 10 to the negative fourth Teslas
732704094Motional emfThe electromotive force created by sliding a rod through a magnetic field, thereby changing the area of the circuit
732704095Magnetic FluxThe product of Area times the magnetic field, measured in Webers.
732704096Weber (Wb)The SI unit for magnetic Flux, units are Tesla meter squared or Newton meter per ampere.
732704097North PoleThe place where the field lines in a magnetic field flow from
732704098South PoleThe place where the field lines in a magnetic field flow to
732704099Mechanical WaveA disturbance transmitted by a medium from one point to another without the medium itself being transported
732704100Traveling Wavea wave in which the medium moves in the direction of propagation of the wave
732704101CrestsThe maximum vertical displacement of the wave above the horizontal
732704102TroughsThe maximum vertical displacement of the wave below the horizontal
732704103WavelengthThe length of one wave, goes between two troughs or two crests
732704104AmplitudeThe maximum vertical displacement from the horizontal
732704105PropagatesBasically, what the wave does, but it signifies the direction of the wave
732704106TransverseThe wave in which the wave oscillates perpendicular o the direction in which the wave propagates
732704107Angular frequencyThis is defined by multiplying 2 pi times the frequency
732704108Angular wave numberThis is defined by multiplying 2 pi times the wave number
732704109Wave Number (Propagation constant, K)The number of wavelengths per unit distance
732704110SuperpositionThe sum of the displacements of two or more waves where they meet and interfere with each other
732704111InterfereIn Waves, this is where the waves overlap and react to one another
732704112Constructive InterferenceThe type of interference where the wave displacement is made greater as a result of the difference
732704113Destructive InterferenceThe type of interference where the wave displacement is made smaller as a result of the difference
732704114In PhaseWhen the two waves meet, they are described as this when the crest of one wave matches the crest of another (or trough etc. same point)
732704115Out of PhaseWhen the two waves meet, they are described as this when the crest of one wave meets the trough of another (or slightly off, but it is exactly out of phase if the crest hits the trough)
732704116Standing WaveThe wave where the crests or troughs don't move anymore and the oscillation continues
732704117NodesThe points in a standing wave where there is zero amplitude
732704118Anti-nodesThe points in a standing wave where there is maximum amplitude
732704119Harmonic Waves (or Resonant Waves)The frequency of a wave that produces a node (or anti-node if using instruments) on each end of the wave
732704120Harmonic Numberthe number that describes the degree of the harmonic waves. For frequencies, this is directly proportional and for wavelengths, inversely proportional
732704121Fundamental FrequencyThe frequency of a standing wave in a certain medium that has a harmonic number of 1
732704122CompressionsThe points in a longitudinal wave where the molecules are bunched together, pressure above normal.
732704123RarefactionsThe points in a longitudinal wave where the molecules are farther apart, pressure below normal.
732704124Longitudinal WavesThe type of waves that have compressions and rarefactions, not nodes and anti-nodes
732704125Bulk ModulusThe measurement of the medium's response to compression.
732704126IntensityThe energy transmitted by sound, is in W/ m squared and is solely dependent on the wave's amplitude.
732704127DecibelsThe non-SI unit of sound intensity. Is abbreviated dB
732704128Loudness levelIs dependent on the intensity of the wave, is a way to describe the decibels of the sound.
732704129BeatWhen two sound waves interfere constructively, this is produced
732704130Beat FrequencyThe difference between the frequencies of the two combining sound waves that make a beat.
732704131OvertoneThe harmonics above the first harmonic in a simple instrument
732704132Doppler EffectThe shift in frequency and wavelength that occurs when the source and detector are in relative motion.
732704133Red-shiftedWhen the wavelength for light shifts higher, astronomers describe the shift as this.
732704134Electromagnetic Spectrum (EM Spectrum)The continuum that includes radiowaves, microwaves, infrared, visible light, ultraviolet, X-rays, y-rays (gamma rays).
732704135RadiowavesThe electromagnetic wave that goes to the frequency of 10 to the 9th
732704136MicrowavesThe electromagnetic wave that goes from the frequency of 10 to the 9th to 10 to halfway between 10 to the 11th and 10 to the 12th.
732704137InfraredThe electromagnetic wave that goes from between the frequencies of 10 to the 11th and 10 to the 12th to 10 to the 14th
732704138Visible LightThe electromagnetic wave that goes from the frequencies of 10 to the 14th to a little below 10 to the 15th
732704139UltravioletThe electromagnetic wave that goes from a little below the frequency of 10 to the 15th to a little above 10 to the 16th
732704140X-RaysThe electromagnetic wave that goes from a little above the frequency of 10 to the 16th to halfway between 10 to the 19th and 10 to the 20th.
732704141Gamma Rays (y-Rays)The electromagnetic wave that goes from between the frequencies of 10 to the 19th and 10 to the 20th and upwards
732704142CoherentThe description where two interfering waves keep the same phase difference over time, not varying.
732704143DiffractionThe effect caused when a wave passes through a barrier with a comparable width to its wavelength. Forms a fan-out pattern.
732704144FringesThe bands of dark and light in a diffraction pattern that are visible.
732704145Central MaximumThe bright fringe directly opposite to the midpoint between the slits in a diffraction setting.
732704146Diffraction gratingsBarriers that contain thousands of tiny slits per centimeter and it makes the pattern sharper.
732704147Incident breamThe beam of light that strikes a surface and will be reflected or refracted.
732704148Angle of incidenceThe angle formed between the incident beam and the normal
732704149Reflected BeamThe beam of light that is reflected off of a surface from the incident beam
732704150Angle of ReflectionThe angle that the reflected beam makes with the normal
732704151Index of RefractionThe number that relates the speed of light in air versus the speed of light in the material.
732704152RefractThe bending of light towards or away from the normal when passing through a surface
732704153DispersionThe effect caused when light strikes a surface and refracts according to each component's index of refraction (most visible in a prism with visible light).
732704154Critical AngleThe angle of incidence where the angle of refraction equals 90 degrees
732704155Total Internal Reflection (TIR)This happens when the angle of incidence is greater than the critical angle
732704156MirrorAn optical device that forms an image by reflecting light
732704157Real ImageAn image that can be projected onto the screen. The image that is in the expected position (on a ray diagram)
732704158Virtual ImageAn image that cannot be projected onto the screen. The image that is in the opposite position (on a ray diagram)
732704159Spherical MirrorA mirror that is curved in such a way that its surface forms part of a phere
732704160Center of CurvatureThe center of the imaginary sphere that forms the mirror
732704161Radius of CurvatureThe radius of the imaginary sphere of a spherical mirror, it goes from a point to the center of curvature
732704162Focal Point (Focus)The point halfway between the mirror and the center of curvature
732704163AxisThis is the line where the mirror is symmetrical over
732704164VertexThe intersection point where the axis intersects with the mirror itself
732704165Focal LengthThe distance between the vertex and the focal point
732704166Paraxial RaysThe incident light rays that strike close to the mirrors axis. These light rays act almost the same in spherical and parabolic mirrors.
732704167Concave MirrorThis is a mirror with the reflective side is caved in toward the the viewer
732704168Convex MirrorThis is a mirror with the reflective side curving away from the viewer
732704169Ray TracingThe geometric approach of finding the image in a Ray Diagram
732704170Converging LensThis type of lens has both sides approaching each other near the ends. It is a bi-convex lens, commonly, but only one side needs to be convex (the other must be planar then)
732704171Real FocusThe focal point on the opposite side of a lens. It is opposite the incident light rays.
732704172Diverging LensThis type of lens has both sides going farther away from each other near the ends. It is normally bi-concave, but only one side needs to be concave (the other must be planar then)
732704173Virtual FocusThe focus on the same side as the incident light rays in a lens. The focus on the same side of the lens
732704174Optical CenterThe central point within the lens where the axis intersects the lens.
732704175Power of a LensDefined as one over focal length
732704176Diopters (D)This is the measurement of the power of a lens. Measured in 10 to the negative first meters
732704177QuantaThe bundle of electromagnetic energy that is absorbed or emitted by matter
732704178PhotonThe quantum of electromagnetic energy
732704179Photoelectric EffectThe effect that a stream of photons produces. Basically light can behave like a wave or a particle (This effect is caused by the particle behavior)
732704180PhotoelectronsThe released electrons that are emitted because of the Photoelectric effect.
732704181Threshold frequencyThe smallest amount of frequency that is required to release electrons from a certain metal
732704182Planck's ConstantThis photoelectric constant is equal to 6.63 Joules per second. It is the proportionality constant between the energy of the electromagnetic wave and the frequency of it.
732704183Work FunctionThe amount of energy required to release an electron from a certain metal. This changes with each material
732704184Electronvolt (eV)This is a small amount of energy, it is equal to 1.6 x 10 to the negative 19th Joules. It is equal to the energy gained or lost by an electron accelerated through a potential difference of one volt
732704185Atomic SpectraThe component wavelengths of the light given off from a glowing gas
732704186ExcitedThe process where an electron goes to a higher orbit, one with a greater radius. Essentially, it gets ______
732704187Energy LevelThe n in the quantum mechanics. This is another way to describe the orbit level of the electron since those orbits contain a certain amount of energy
732704188Ground-State EnergyThe smallest amount of energy an electron in a specific orbit can have. Is specific to the atom
732704189IonizingWhen the atom loses or gains electrons, it goes through this process to become an ion.
732704190Ionization EnergyThe minimum amount of energy that must be supplied to release the atom's electron.
732704191Wave-Particle DualityThis is the phenomenon where light propagates like a wave but also acts like a particle. Also can apply to matter (This is freaky to think about!)
732704192de Broglie WavelengthThis is the wavelength that matter exerts while it is in motion. Is mostly noticeable with subatomic particles, not ordinary objects
732704193ProtonsThe positive subatomic particles in the nucleus
732704194NeutronsThe subatomic particles in the nucleus that have no net charge
732704195NucleonsThe collective term for protons and neutrons
732704196Atomic NumberThe number of protons in a given nucleus gives this number
732704197Neutron NumberThe number of neutrons in a given nucleus gives this number
732704198Mass Number (Nucleon Number)The total number of nucleons in a given atom, is the number of protons plus the number of neutrons.
732704199IsotopesThe atoms that contain the same number of protons (within an element), but different number of neutrons
732704200NuclideThe term for a nucleus with a specific numbers of protons and neutrons
732704201Strong Nuclear ForceThe fundamental force that binds neutrons and protons together. It is too complicated to be expressed in a simple formula
732704202Atomic Mass Unit (amu)The mass of one individual nucleon. Defined as 1/12th of the mass of a Carbon-12 atom.
732704203Deuteron (Nucleus of Deuterium)The isotope of Hydrogen that has one proton and one neutron
732704204Mass Defect (d)The difference of mass between the theoretical mass of the atom through weighing each individual nucleon and the actual mass of the atom
732704205Binding energyThe energy that holds the nucleus together
732704206Mas-Energy EquivalenceThis is the idea that is proven by Einstein's famous equation E-∆m x c squared
732704207Binding-Energy-Per-NucleonThis is calculated by taking the total amount of binding energy and dividing it by the total number of nucleons
732704208Nuclear FissionThe process of splitting an atomic nucleus
732704209Nuclear FusionThe process of fusing an atomic nucleus
732704210Disintegration EnergyThe amount of energy that is released in a radioactive decay process (or needed to be added to make a nuclear process work)
732704211Exothermic (Exoergic)When the disintegration energy is positive, this type of nuclear process is spontaneous
732704212Endothermic (Endoergic)When the disintegration energy is positive, this type of nuclear process cannot be spontaneous

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