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Physics AQA A level

In English

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Will Parker

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State phase difference

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

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458 questions
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
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 an anti node?
The position of maximum displacement in a standing wave system
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 baryons and antibaryons?
Proton Neutron Antiproton Antineutron
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 is a muon?
An electron but with a mass 200 times greater
What is the quark composition of a kaon 0
D, anti-strange s, anti-down
What is the symbol for a muon antineutrino
Top right with a line over it
State the nature of an alpha particle
Helium nucleas 2 protons 2 neutrons
What are mesons?
Particles containing a quark and an anti quark
What does a muon decay into?
An electron and two neutrinos
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 or explaination of quark structure?
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 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
State Kirchoffs first law
Electric charge is conserved in all circuits
What is Kirchoffs second law
Energy is conserved in all circuits
What does 'ε' stand for?
Electromotive force
Define electromotive force
The energy transferred by a cell per coulomb of charge that passes through it
Define Random Error​
An error in a measurement caused by factors that change from one measurement to another​
What is a measurment
The value taken as the difference between the judgements of two values​ of a measuring instrument
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​
Define Accuracy​ in the context of science
Result is close to the true value (accepted value)​