Physics AQA A level
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Physics AQA A level - Marcador
Physics AQA A level - Detalles
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Preguntas:
458 preguntas
| 🇬🇧 | 🇬🇧 |
| 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 wavelength? | Radio waves |
| 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 an anti node? | The position of maximum displacement in a standing wave system |
| What wave types comes either side of micro? | Infared Radio |
| 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 = 3 x 10 to the 8 |
| 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 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 |
| 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 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 pie plus | Up, anti-down |
| 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 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 |
| State the nature of an alpha particle | Helium nucleas 2 protons 2 neutrons |
| 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 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 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 |
| 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 |
| 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 |
| 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) |