Physics archive | Science | Khan Academy

Physics Course Archive

• Classical Mechanics:
  • Newton's laws of motion.
  • Normal force and contact force.
  • Inclined planes and friction.
• Waves and Sound:
  • Introduction to mechanical waves.
  • Sound properties.
  • The Doppler effect.
• Electromagnetism:
  • Discovery of magnetism and magnetic fields.
  • Methods for measuring magnetic fields.
• Battery and Electrochemical Experiments:
  • Discovery of batteries (Zinc-copper reduction-oxidation cells).
  • Measurement tools: Battery meters and galvanometers.
  • Experimental variables: Number of turns, electrode polarity, electrode distance, and surface area.
  • Electrolyte testing: Comparing pure water, vinegar, strong acids, salt, and temperature effects.
  • Standard cell construction and electrolyte volume requirements.
  • The relationship between batteries and electromagnetism.