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Physics
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OCR AAQ in Applied Science: P1 Electricity
Course: OCR Level 3 Alternative Academic Qualification Cambridge Advanced Nationals in Applied Science.
Topic Area P1: Electricity
Know the definition of electric current in metals and electrolytes
Know the unit of current
Conventional current and electron flow
Direct current
Know the unit of charge
Elementary charge, e, including charge of an electron and proton
Use of the equation: Charge © = current (A) × time (s)
Know the definition of potential difference, with respect to work done
Know the unit of potential difference
How resistance is defined by: Resistance (Ω) = potential difference (V)
current (A)
Know the unit of resistance
I-V characteristics of resistor, light-dependent resistor (LDR), filament lamp,
thermistor, diode and light-emitting diode (LED)
Use of the equation: Potential difference (V) = current (A) × resistance (Ω)
Know Ohm’s law
Resistance of NTC thermistors with temperature, and resistance of LDRs with light intensity
Know the definition of power
Know the unit of power
Use of the equations:
Power (W) = current (A) × potential difference (V)
Power (W) = (current (A))2 × resistance (Ω)
Power (W) = (potential difference (V))2 resistance (Ω)
Work done (J) = potential difference (V) × current (A) × time (s)
Work done (J) = potential difference (V) × charge ©
The definition of an electronvolt
Circuit symbols
The relationships between currents, voltages and resistances in series and parallel, including how potential difference varies for cells in series.
Know Conservation of charge and Kirchoff’s first law
Know Conservation of energy and Kirchoff’s second law
Solving for resistors in series
Solving for resistors in parallel
The principles of a potential divider circuit
The use of a potentiometer as a potential divider
The use of potential divider circuits with LDRs and thermistors
How to solve problems for potential divider circuits with potentiometers, LDRs and thermistors
Use of apparatus, techniques and procedures to investigate potential divider circuits which may include a sensor such as a thermistor or an LDR
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OCR AAQ in Applied Science: P3: Medical Physics
Course: OCR Level 3 Alternative Academic Qualification Cambridge Advanced Nationals in Applied Science.
Topic Area 3: Medical Physics
3.1 - X-rays and ultrasound
3.2 -3.2 Radioactivity
These PowerPoints is a whole lessons included with student activities and animated answers.
Electron transitions
Ground state, excited state, and ionised state
The similarities and differences between the types of electromagnetic (EM) radiation, including in terms of production, penetration, uses, frequency and wavelength
Know the definition of a quantum and a photon
Use of the equations:
Energy of a photon (J) = Planck constant (J s) × frequency (Hz)
Energy of a photon (J) = Planck constant (J s) × speed of light in a vacuum (ms–1) / wavelength (m)
Basic structure of an X-ray tube including: heater (cathode), anode, target metal and high voltage supply
How X-rays are produced in an X-ray tube, including thermionic emission and energy transfers
How tube current and voltage affects the X-ray beam
Attenuation of X-rays by absorption and scattering
Use of the attenuation of X-rays equation to calculate intensity
Know mass attenuation coefficient
Use of the mass attenuation coefficient equation.
Examples of longitudinal and transverse waves including sound waves and electromagnetic waves
Graphical representations of longitudinal and transverse waves
Describe wave motion in terms of displacement, amplitude, wavelength, time period, frequency and wave speed.
Describe the relationship between intensity and amplitude
Use of the equations:
Frequency
Wave speed
Intensity
Know definition of ultrasound, including in medical contexts
Reflection, and transmission of ultrasound
Know that a transducer can both transmit pulses and receive reflected pulses
Attenuation of ultrasound by absorption and scattering
Impedance matching and coupling mediums
How to interpret and use A-scans to solve problems
Use of the equations:
Density equation
Acoustic impedance equation
Intensity reflection coefficient equation
The spontaneous and random nature of nuclear radioactive decay
Know types of decay
Properties of nuclear radiation (alpha, beta and gamma)
Nuclear decay equations
Know how to graphically determine the physical half-life of an isotope
Biological, physical and effective half-lives
Use of the activity equation
Use of the equations to determine N/N0/A/A0
Use of the effective half-life equation
Irradiation and contamination
Physiological effects of radiation
Mechanism of direct and indirect ionisation of biological molecules
Absorbed and effective dose
Ionisation and half-equations
Know the definition of radiopharmaceuticals
Use of radionuclides in sterilisation, cancer treatments and medical tracers
How to select a radionuclide for an appropriate use
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OCR AAQ in Applied Science: P2: Motion
Course: OCR Level 3 Alternative Academic Qualification Cambridge Advanced Nationals in Applied Science.
Topic Area P2: Motion
How energy is stored
How energy is transferred via energy carriers or pathways
How diagrams can be used to represent energy transfers
How to draw scale Sankey diagrams
Know the definition of work done by a force
Know the unit of work done
Use of the equations:
Work done (J) = force (N) × displacement (m)
Work done (J) = force (N) × displacement (m) × cosθ
Power (W) = work done (J) x time (s)
Efficiency = useful energy transferred /total energy transferred
SUVAT equations
Kinetic energy equation
Gravitational potential energy equation
Elastic potential energy equation
Determine the work done on a spring from a graph
Apply conservation of energy to examples involving gravitational potential
Law of conservation of energy
energy, elastic potential energy, and kinetic energy
Newton’s first and third laws of motion
Newton’s second law of motion for constant mass
Use of Newton’s three laws of motion including how to use free-body force diagrams to solve problems
The vector–scalar distinction as it applies to displacement and distance, velocity and speed
Use of apparatus, techniques and procedures to accurately determine the
acceleration of free fall using trapdoor and electromagnet arrangement; light gates and timer
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OCR AS level Physics: Materials
OCR AS level Physics presentations for module 3: Materials.
All presentations come with worked examples, solutions and homeworks.
This covers topics from Hooke’s Law to Young Modulus.
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OCR A level Physics: Gravitational Fields
OCR A level Physics: Gravitational Fields is apart of the Module 5: Newtonian world and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
18.1 Gravitational Fields
18.2 Newton’s law of gravitation
18.3 Gravitational field strength for a point mass
18.4 Kepler’s laws
18.5 Satellites
18.6 Gravitational potential
18.7 Gravitational potential energy
The terms: eccentricity, aphelion, perihelion, astronomical unit
Kepler’s First Law
Kepler’s Second Law
Kepler’s Third Law
Graphs of T^2 against r^3 to determine the gradient (constant of proportionality, k).
Equating (4π)^2/𝐺𝑀 to the gradient (constant of proportionality, k)
Key features of geostationary and low polar orbit satellites
Conditions for stable orbits for satellites
Applying Kepler’s laws to the orbits of satellites
Radial and uniformed field
Definition of gravitational potential energy
Deriving escape velocity
Force-Distance graphs for gravitational fields
Center of mass and treating spherical objects as point masses
Gravitational fields
Definition of gravitational potential
Applying the gravitational potential equation
Graph of gravitational potential against distance (V against r)
Combining gravitational potentials from more than one mass
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OCR AS level Physics: Work, Energy and Power
OCR AS level Physics presentations for module 3: Work, Energy and Power.
All presentations come with worked examples, solutions and homeworks.
This covers topics from conservation of energy to derivations for kinetic energy.
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OCR A level Physics: Cosmology (Big Bang)
OCR A level Physics: Chapter 20 Cosmology (Big Bang) is apart of the Module 5: Newtonian world and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
20.1 Astronomical Distances
20.2 The Doppler Effect
20.3 Hubble’s Law
20.4 The Big-bang Theory
20.5 Evolution of the Universe
Astronomical distances: light-years, parsec, astronomical unit
Astronomical angles - degree, arcminute, arcsecond
Parallax Angle
The definition of the Doppler effect
Changes in pitch of sound waves due to relative motion
Absorption spectra and electron energy levels
Red-shift and blue-shift absorption spectra
The Doppler equation
The condition for velocity for the Doppler equation
The Cosmological Principle
Hubble’s Observations
Hubble’s Law
Hubble’s constant and the gradient of a graph
Converting between km s-1 Mpc-1 into s-1
The expanding Universe model.
Georges Lemaître’s Theory
Evidence for the Big Bang Model
Hubble’s Law (expanding Universe)
Microwave Background Radiation
Source of the Microwave Background Radiation
Hubble’s constant and the age of the Universe
The evolution of the Universe from the Big-bang to 13.7 billion years later
The composition of the Universe
Experimental evidence for dark matter
Experimental evidence for dark energy
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OCR A level Physics: Magnetic Fields
OCR A level Physics: Chapter 23 Magnetic Fields is apart of the Module 6: Particle and Medical Physics
All presentations come with worked examples, solutions and homeworks.
23.1 Magnetic fields
23.2 Understanding magnetic fields
23.3 Charged particles in magnetic fields
23.4 Electromagnetic induction
23.5 Faraday’s law and Lenz’s law
23.6 Transformers
Attraction and repulsion of magnets
Rules for magnetic field lines
The magnetic field of Earth
Applying the right-hand cork screw rule
How to create uniformed magnetic fields
Solenoids
Fleming’s left hand rule
Determining the direction of force on a current carrying conductor
Calculating the magnitude of force on a current carrying conductor
Angles between the magnetic field and current carrying conductor
An experiment to determine the magnetic flux density of a field.
Apply Fleming’s left-hand rule to charged particles
Deriving an equation for the magnetic force experienced by a single charged particle (F = BQv)
Charged particles describing (moving) in circular paths in magnetic fields.
The velocity selector.
The Hall probe and Hall voltage.
Electromagnetic induction produces an induced e.m.f
Conditions to produce electromagnetic induction
How to increase electromagnetic induction
Magnetic flux density, magnetic flux, and magnetic flux linkage
Units of weber (Wb)
Magnetic flux density and magnetic flux linkage
Faraday’s Law
Lenz’s Law
Alternators and induced e.m.f.
Graphs of flux linkage and induced e.m.f.
Structure of transformers
Step-up and step-down transformers
The turn-ratio equation
The ideal transformer equation
Why transformers are used in the National Grid
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OCR A level Physics: Capacitance
OCR A level Physics: Chapter 21 Capacitance is apart of the Module 6: Particle and Medical Physics
All presentations come with worked examples, solutions and homeworks.
21.1 Capacitors
21.2 Capacitors in circuits
21.3 Energy stored by capacitors
21.4 Discharging capacitors
21.5 Charging capacitors
21.6 Uses of capacitors
Electrical quantities, symbols, and units
SI prefixes and standard form
Definition of a capacitor
Structure of a capacitor
Calculating capacitance, charge, and potential difference.
Uses of capacitors in circuits.
Rules for capacitors in parallel (potential difference, charge, and capacitance).
Rules for capacitors in series (potential difference, charge, and capacitance).
Applying the rules in series and parallel.
Creating a circuit to calculate the charge stored on the capacitor.
Work done of a capacitor depends upon the initial potential difference and capacitance.
Work done is provided by the source of potential difference.
Deriving three equations for work done of a capacitor.
Exponential increase and exponential decay
Explaining how capacitors discharge through a resistor in parallel
Definition of time constant for a capacitor
Showing that time constant has units of seconds
Iterative method for finding how capacitors discharge
Using exponentials and logs.
Solving a differential equation (needed for A-level Maths).
Explaining how capacitors charge with a resistor in series
Explaining how 𝑉, 𝐼, or 𝑄, change with time 𝑡 for a charging capacitor.
Sketching graphs for 𝑉, 𝐼, or 𝑄, after time 𝑡 for a charging capacitor.
Calculating 𝑉, 𝐼, or 𝑄, change with time 𝑡 for a charging capacitor.
Calculating power output from a circuit containing a capacitor
A rectifier circuit - changing an alternating input to a smooth output
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OCR A level Physics: Ideal Gas
OCR A level Physics: Ideal Gas is a part of the Module 5: Newtonian World and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
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OCR AS level Physics: Laws of Motion
OCR AS level Physics presentations for module 3: Materials.
All presentations come with worked examples, solutions and homeworks.
This covers topics from Newton’s laws to conservation of momentum in two dimensions.
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OCR A level Physics: Stars
OCR A level Physics: Chapter 19 Stars is apart of the Module 5: Newtonian world and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
19.1 Objects in the Universe
19.2 Life Cycles of Stars
19.3 Hertzsprung-Russell Diagram
19.4 Energy Levels in Atoms
19.5 Spectra
19.6 Analysing Starlight
19.7 Stellar Luminosity
The size of astronomical objects: Universe, Galaxies, Solar systems, Stars, Planets, Planetary satellites, Comets, Artificial planetary satellites
Comparing planets and comets
The birth of stars
Stars in equilibrium during the main sequence
Calculating mass in kg from solar mass
Life cycle of stars with a mass between 0.5 and 10 solar masses
Life cycle of stars with a mass above 10 solar masses
Pauli exclusion principle and electron degeneracy pressure
Red giants and white dwarfs
The Chandrasekhar limit
Red supergiants to black holes and neutron stars
Stellar nucleosynthesis
Definition of luminosity
Usual axis choice of a HR diagram.
Identifying the positions of the main sequence, white dwarfs, red giants, and red supergiants.
Description of how stellar evolution is shown in a Hertzsprung-Russell diagram
Atoms have different electron arrangements
Ground state energy
Bound electron states being negative
Converting between joules and electronvolts
Calculating the change of energy between energy states
Calculating a photon’s frequency and wavelength
The electromagnetic spectrum and wavelengths
Definition of spectroscopy
Electrons and energy levels
Continuous spectra
Emission spectra from gases
Absorption spectra from gases
Electromagnetic interference
Double slit experiment
Path and phase difference
Diffraction grating
The grating equation
Lines per millimeter to grating spacing
Maximum order, n
Maximum number of maxima
The electromagnetic spectrum, frequency/wavelength, and temperature
Black body radiation
Wein’s displacements law
Stefan’s law (Stefan-Boltzmann law)
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OCR A level Physics: Radioactivity
OCR A level Physics: Chapter 25 Radioactivity is apart of the Module 6: Particle and Medical Physics
All presentations come with worked examples, solutions and homeworks.
25.1 Radioactivity
25.2 Nuclear decay equations
25.3 Half-life and Activity
25.4 Radioactive Decay Calculations
25.5 Modelling Radioactive Decay
25.6 Radioactive Dating
Types of ionising radiation (alpha, beta-plus/beta-minus, gamma)
Penetration power and ionising power
Detecting radiation with a Geiger (GM tube) counter
Background radiation and correct count rates
Electric and magnetic fields affect ionising radiation
Cloud chambers
Typical speeds of radiation produced form nuclear decays
Conservation rules for nuclear decays
Nuclear notation
Alpha decays
Beta-minus and beat-plus decays
Gamma decays
Decay chains
The reason why radioactive decays are considered random and spontaneous
Rolling dice being a good analogue for radioactive decays
Definition of half-life
Determining half-life from a graph.
Calculating half-life from a table of data.
Activity of a sample in Bq
The decay constant derivation
Decay constant and half-life
Using exponentials to calculate activity and number of nuclei present
Solving Differential Equations (beyond A-level Physics course)
Iterative Method
Selecting appropriate time intervals
Comparing answers from the iterative method and exact solution.
State what isotopes of carbon are used in carbon dating.
Explain how carbon dating works.
Calculate the age of objects with carbon dating.
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OCR A level Physics: Oscillations and Simple Harmonic Motion
OCR A level Physics: Oscillations and Simple Harmonic Motion is a part of the Module 5: Newtonian World and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
Bundle

OCR A level Physics: Electric Fields
OCR A level Physics: Chapter 22 Electric Fields is apart of the Module 6: Particle and Medical Physics
All presentations come with worked examples, solutions and homeworks.
22.1 Electric Fields
22.2 Coulomb’s Law
22.3 Uniform electric fields and capacitance
22.4 Charged particles in uniformed electric fields
22.5 Electric potential and energy
Electric field line pattern from point charges, uniformly charged objects, and capacitors.
Rules for electric field lines
Interacting field lines for attraction and repulsion
Detecting electric fields with a charged gold leaf
Definition of electric field strength
Explaining that electric field strength is a vector with magnitude and direction
Apply the equation for electric field strength
Electric force related to the product of charge and square of the separation
The constant of proportionality 𝑘
Permittivity of free space
Experiment for investigating Coulomb’s Law
Electric Field Strength and Coulomb’s Law
Liquid crystal displays (LCDs)
Electric field between two charged parallel plates
Deriving an equation for electric field strength of a parallel plate capacitor.
Accelerating charged particles in a uniformed electric field
Capacitance of a parallel plate capacitor with an insulating (dielectric) material - relative permittivity
Millikan’s experiment
Equations for constant acceleration
Maximum kinetic energy of a charged particle in a uniformed field
Sketching trajectories for charged particles in uniformed fields
Calculating velocities for horizontal and vertical components
Definition of electric potential energy
Definition of electric potential.
Definition of electric potential difference.
Using a force-distance graph to determine electric potential energy
Using electron-volts and joules in calculations
Capacitance of an isolated charged sphere
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OCR AS level Physics: Waves 1
OCR AS level Physics presentations for module 4: Waves 1
All presentations come with worked examples, solutions and homeworks.
This covers topics from wave properties to Snell’s law and total internal reflection.
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OCR AS level Physics: Waves 2
OCR AS level Physics presentations for module 4: Waves 2
All presentations come with worked examples, solutions and homeworks.
This covers topics from Superposition of Waves to Harmonics with different boundary conditions.
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OCR A level Physics: Circular Motion
OCR A level Physics: Thermal Physics apart of the Module 5: Newtonian World and Astrophysics.
All presentations come with worked examples, solutions and homeworks.
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OCR AS level Physics: Forces in Action
OCR AS level Physics presentations for module 3: Forces in Action.
All presentations come with worked examples, solutions and homeworks.
This covers topics from weight as a force to Archimedes’ principle.

OCR AAQ in Applied Science: 1.3 The Scientific Community
Course: OCR Level 3 Alternative Academic Qualification Cambridge Advanced Nationals in Applied Science.
Unit F181: Science in society
Topic Area 1.3 The Scientific Community
This PowerPoint is a whole lessons included with student activities and animated answers.