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# Physics AQA A level

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Will Parker

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[Front]

State phase difference
[Back]

How much a particle lags behind another particle Time delay/ lag between one wave and another

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### Questions:

387 questions
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 State phase difference How much a particle lags behind another particle Time delay/ lag between one wave and another
 What is the critical angle? Angle which causes the angle of refelction to be 90
 Describe the phase and behaviour of the waves, for a node when two waves are interacting together Two waves that have opposite phase and cancel each other out
 What wave type has the highest frequency? Gamma
 What wave type has the highest wavelength? Radio waves
 What visible wave type has the highest frequency? Violet
 What visible wave type has the longest wavelength? Red
 What does a transverse wave look like? Transverse wave
 What does a longitudinal wave look like? Longitudinal wave
 State what amplitude is A wave’s maximum displacement from the equilibrium position
 Define wavespeed Distance travelled by the wave per unit time
 Define what wavelength is The length of one whole oscillation
 Define frequency The number of complete oscillations passing through a point per second
 State what a wave period is Time taken for one full oscillation
 Define phase The location or timing of a point within a wave cycle
 What are all the units of phase? Radians Angles Fractions
 What is the amplitude of a node? 0
 What is an anti node? The position of maximum displacement in a standing wave system
 What is the amplitude of an antinode? Max
 What is the name of the wave type which has the second highest freuency? X-rays
 What wave type has the 3rd lowest frequency? Infared
 What wave types comes either side of micro? Infared Radio
 What wave type has the largest energy? Gamma
 What inrcreases together, energy, wavelength or freuency of a wave? Energy Frequency
 What are the requirements of a wave for it to be in phase? Same frequency and wavelength
 What can you say about the speed of all electromagnetic waves in a vacum Same
 How is polarisation evidence for the nature of transverse waves Transverse waves oscilate perpendicular to the direction of travel
 Give the equation for the fundamental frequency F of n = (n/(2 x length))(Square root of(Tension/mass per unit length)) Where n is the harmonic (so 1, 2, 3 etc...)
 What is a hadron? A particle subject to feel all the forces (I.e. Including the strong force)
 What are the types of hadrons called? Baryons Mesons
 What are the types of baryons and antibaryons? Proton Neutron Antiproton Antineutron
 What are the types of mesons? Pion Kaon
 What is the only stable baryon? Proton
 Whats the name of the particle for the exchange particle of the strong nuclear force? Pion
 What particle decays into pions Kaon
 What is the differnce between leptons and hadrons Leptons dont feel the strong force
 What are the types of leptons? Electron, muon, neutrino
 What are the types of antileptons? Positiron Antimuon Electron antineutrino Muon antineutrino
 What is the: Strangeness Baryon number Lepton number of leptons Strangeness: 0 Baryon number: 0 Lepton number: +/- 1
 What is the: Strangeness Baryon number Lepton number of baryons Strangeness: 0 Baryon number: +/- 1 Lepton number: 0
 What is the: Strangeness Baryon number Lepton number of mesons Strangeness: +/- 1 Baryon number: 0 Lepton number: 0
 What does a muon partcile decay into? Electron + an electron antineutrino + muon neutrino
 How are strange particles produced ? Through strong interaction
 What force do strange particles decay by? Weak
 Upon weak decay what characteristic of particles changes The strangeness
 What are the actual names of the particles that make up an atom Electron Proton Nuetron
 Whats the baryon number of a strange, an up and a down quark? 1/3
 Whats the quark composition for pion 0 U, anti u OR d, anti d
 What is a muon? An electron but with a mass 200 times greater
 What is the charge, mass, reaction rate of a neutrino? 0, close to 0 and rarely
 What is the quark composition of a proton? Uud
 What is the quark composition of a neutron Ddu
 What is the quark composition of a pion minus D, anti-up
 What is the quark composition of a pie plus Up, anti-down
 What is the quark composition of a minus kaon? S, anti-up
 What is the quark composition of a kaon 0 D, anti-strange s, anti-down
 What is the quark composition of a kaon plus U, anti-strange
 What is the symbol for a muon? Left
 What is the symbol for a electron neutrino Electron neutrino
 What is the symbol for a muon neutrino Muon neutrino
 What is the symbol for an electron antineutrino Middle right
 What is the symbol for a antimuon Dark Blue
 What is the symbol for a muon antineutrino Top right with a line over it
 Which of these are parts of a nucleas for an atom: Leptons, hadrons, baryons Baryons and so hadrons
 What are the names of the particles that make up a nucleas Proton Nuetron
 State the nature of an alpha particle Helium nucleas 2 protons 2 neutrons
 Whats the charge of an up quark? 2/3
 Whats the charge of a down quark -1/3
 Whats the charge of a strange quark -1/3
 Whats the strangeess of a strange quark -1
 Whats the charge on a muon -1
 What does a muon decay into? An electron and two neutrinos
 What are mesons? Particles containing a quark and an anti quark
 What two interactions are the neutrino subject to? Gravity and weak
 Define elementary particles Particles that cannot be broken down into smaller things
 What is a kaon A meson having a mass several times that of a pion
 What is a pion A meson having a mass approximately 270 times that of an electron
 Explain what current is The rate of flow of charge
 Define what pd is Work done per unit charge
 What is power a measure of? How quickly something can transfer energy
 Equation for resistance current and voltage Voltage divided by the current
 How would you describe the relationship between differnt points in a series circuit when discussing current? Same everywhere
 How would you describe the relationship of voltage round a series circuit? Total voltage is summed
 How would you describe resistance a series circuit? Sum of each resistor = total resistance
 How would you describe the total resistance in parallel? 1 over the sum of the resistors in parallel
 How would you describe voltage in a parallel circuit? Total voltage is the same at any point in the parallel circuit
 Describe current in parallel Total current is the sum of all branches of current
 Which way does current flow out of a cell? Phat end or skinny end? Phat
 State Kirchoffs first law Electric charge is conserved in all circuits
 What is Kirchoffs second law Energy is conserved in all circuits
 What could you say about the relationship between energy going in and out of a circuit Current going in = current going out
 What could you say about the relationship between the energy takers and givers in a circuit Energy givers = energy takers
 What does 'ε' stand for? Electromotive force
 Define electromotive force The energy transferred by a cell per coulomb of charge that passes through it
 What is a measurment The value taken as the difference between the judgements of two values​ of a measuring instrument
 Define Random Error​ An error in a measurement caused by factors that change from one measurement to another​
 What is a Systematic Error​? A consistent difference between the measured values and true values​
 How would you describe the results for an experimet to be repeatable The experimenter repeats the experiment and gets consistent results​
 For an experiment to be repeatable what would you say about the results of other experiements Other experimenters get similar results ​
 Define Accuracy​ in the context of science Result is close to the true value (accepted value)​