Thursday, 17 May 2012

Khan Academy for Prelim and HSC Physics

The Khan Academy is an online educational resource with short (up to 10 minute) lectures on different topics. Below are the Khan Academy videos relevant to Preliminary & HSC Physics.

So - if you didn't quite get something in the last two years and you want it explained again,
Or - if you want some extra worked examples for numerical calculations
Or - you want to hear things explained in a new way,

I recommend you watch the videos below.

But please, no matter how well-intentioned, please don't say "Thanks, I never understood xxxxx before - but now I do thanks to those videos" - even though I will be really happy for you, my professional pride will be wounded.

THE WORLD COMMUNICATES

  1. Introduction to Waves
  2. Amplitude, Period, Frequency and Wavelength of Periodic Waves
  3. Introduction to the Doppler Effect
  4. Specular and Diffuse Reflection
  5. Specular and Diffuse Reflection 2
  6. Refraction and Snell's Law
  7. Refraction in Water
  8. Snell's Law Examples 1
  9. Snell's Law Example 2
  10. Total Internal Reflection
ELECTRICAL ENERGY IN THE HOME

  1. Electrostatics (part 1): Introduction to Charge and Coulomb's Law
  2. Electrostatics (part 2)
  3. Electric Potential Energy
  4. Voltage
  5. Circuits (part 1)
  6. Circuits (part 2)
  7. Circuits (part 3)
  8. Circuits (part 4)
  9. Introduction to Magnetism
MOVING ABOUT

  1. Introduction to Vectors and Scalars
  2. Calculating Average Velocity or Speed
  3. Solving for Time
  4. Displacement from Time and Velocity Example
  5. Acceleration
  6. Newton's First Law of Motion
  7. Newton's Second Law of Motion
  8. Newton's Third Law of Motion
  9. Airbus A380 Take-off Time
  10. Airbus A380 Take-off Distance
  11. Why Distance is Area under Velocity-Time Line
  12. Average Velocity for Constant Acceleration
  13. Acceleration of Aircraft Carrier Takeoff
  14. Race Cars with Constant Speed Around Curve
  15. Deriving Displacement as a Function of Time, Acceleration and Initial Velocity
  16. Visualizing Vectors in 2 Dimensions
  17. Normal Force and Contact Force
  18. Normal Force in an Elevator
  19. Inclined Plane Force Components
  20. Ice Accelerating Down an Incline
  21. Force of Friction Keeping the Block Stationary
  22. Correction to Force of Friction Keeping the Block Stationary
  23. Force of Friction Keeping Velocity Constant
  24. Introduction to Momentum
  25. Momentum: Ice skater throws a ball
  26. 2-dimensional momentum problem
  27. 2-dimensional momentum problem (part 2)
  28. Introduction to work and energy
  29. Work and Energy (part 2)
  30. Conservation of Energy
  31. Work/Energy problem with Friction
COSMIC ENGINE

  1. Scale of Earth and Sun
  2. Scale of Solar System
  3. Scale of Distance to Closest Stars
  4. Scale of the Galaxy
  5. Intergalactic Scale
  6. Hubble Image of Galaxies
  7. Big Bang Introduction
  8. Radius of Observable Universe
  9. (Correction) Radius of Observable Universe
  10. Red Shift
  11. Cosmic Background Radiation
  12. Cosmic Background Radiation 2
  13. Cosmological Time Scale 1
  14. Cosmological Time Scale 2
  15. Birth of Stars
  16. Becoming a Red Giant
  17. White and Black Dwarfs
  18. Hubble's Law
  19. Lifecycle of Massive Stars
  20. Supernova (Supernovae)
  21. Supernova clarification
  22. Black Holes
SPACE

  1. Introduction to Gravity
  2. Mass and Weight Clarification
  3. Viewing g as the value of Earth's Gravitational Field Near the
  4. Gravity for Astronauts in Orbit
  5. Would a Brick or Feather Fall Faster
  6. Normal Force and Contact Force
  7. Normal Force in an Elevator
  8. Plotting Projectile Displacement, Acceleration, and Velocity
  9. Projectile Height Given Time
  10. Deriving Max Projectile Displacement Given Time
  11. Impact Velocity From Given Height
  12. Visualizing Vectors in 2 Dimensions
  13. Projectile at an Angle
  14. Different Way to Determine Time in Air
  15. Launching and Landing on Different Elevations
  16. Total Displacement for Projectile
  17. Total Final Velocity for Projectile
  18. Correction to Total Final Velocity for Projectile
  19. Centripetal Force and Acceleration Intuition
  20. Visual Understanding of Centripetal Acceleration Formula
  21. Loop De Loop Question
  22. Loop De Loop Answer part 1
  23. Loop De Loop Answer part 2
  24. Acceleration Due to Gravity at the Space Station
  25. Space Station Speed in Orbit
  26. Introduction to Newton's Law of Gravitation
  27. Gravitation (part 2)
MOTORS & GENERATORS

  1. Introduction to Torque
  2. Moments
  3. Magnetism 2
  4. Magnetism 3
  5. Magnetism 4
  6. Magnetism 5
  7. Magnetism 6: Magnetic field due to current
  8. Magnetism 7
  9. Magnetism 8
  10. Magnetism 9: Electric Motors
  11. Magnetism 10: Electric Motors
  12. Magnetism 11: Electric Motors
  13. Magnetism 12: Induced Current in a Wire
  14. Introduction to Magnetism
IDEAS TO IMPEMENTATION

  1. Magnetism 2
  2. Magnetism 3
  3. Magnetism 4
  4. Magnetism 5
QUANTA TO QUARKS

  1. Four Fundamental Forces
  2. Types of Decay
  3. Half-Life

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