Physics

Work through the topics in order, or jump to the one you need.

  1. Measurement & Units Fundamental and derived quantities, SI units and prefixes, dimensions, measuring instruments (metre rule, vernier caliper, micrometer screw gauge), precision, errors and significant figures.
  2. Scalars & Vectors Scalars have magnitude only; vectors have magnitude and direction. Learn to represent, add and resolve vectors, and find a resultant's size and direction, with WAEC worked examples.
  3. Motion Distance vs displacement, speed vs velocity, acceleration, motion graphs and the three equations of motion, with WAEC, NECO and GCE worked examples. 🎥 1 video
  4. Mechanics What a force is, the main types of force, mass vs weight, Newton's three laws, F = ma, free-body diagrams, equilibrium and tension, with WAEC and GCE worked examples.
  5. Friction What friction is, its types, limiting friction F = μR, friction with Newton's second law and on an inclined plane, plus its advantages, disadvantages and control, with WAEC worked examples.
  6. Centre of Gravity & Equilibrium What the centre of gravity is, how to find it for regular and irregular bodies, stable, unstable and neutral equilibrium, what makes a body stable, and balancing a metre rule by moments.
  7. Pressure Pressure in solids, liquid pressure (P = hρg), atmospheric pressure and the barometer, the manometer, Pascal's principle and the hydraulic press, density and relative density, Archimedes' principle, upthrust and flotation.
  8. Work, Energy & Power Work done by a force (W = Fs cos θ), work from a force–displacement graph, forms of energy, gravitational PE, KE and elastic energy, conservation of energy, the work–energy theorem, power (P = W/t = Fv) and efficiency, with WAEC, NECO and GCE worked examples.
  9. Circular Motion, Gravitation & SHM Angular velocity, centripetal acceleration and force, cars on bends; Newton's law of gravitation, g and the mass of the Earth, satellites, escape velocity and weightlessness; simple harmonic motion, the pendulum and spring, measuring g, energy, damping and resonance.
  10. Heat & Thermal Physics Heat and temperature, thermometers and temperature scales, thermal expansion, conduction, convection and radiation, specific heat capacity and the method of mixtures, latent heat, evaporation and boiling, and the gas laws.
  11. Waves & Light Transverse and longitudinal waves, v = fλ, wave graphs, echoes, the progressive wave equation, wave properties and the electromagnetic spectrum; reflection and plane mirrors, refraction, Snell's law, total internal reflection, lenses and the lens formula, and dispersion.
  12. Current Electricity Charge and current, potential difference and e.m.f., Ohm's law, resistance and resistivity, resistors in series and parallel, internal resistance, electrical energy and power, the cost of electricity, fuses and safety, and cells.
  13. Magnetism Magnetic materials, the laws of magnetism, domain theory, magnetisation, field lines, the Earth's field (declination and dip), electromagnets, F = BIL sin θ, force on a moving charge, and the d.c. motor, with WAEC and NECO worked examples.
  14. Quantum & Nuclear Physics Radioactivity, isotopes, alpha, beta and gamma radiation, balancing nuclear equations, half-life calculations, carbon dating, detectors, fission and fusion, uses, hazards and safety, with WAEC, NECO and UTME worked examples.
  15. Quantum Theory Planck's quantum hypothesis, photons and E = hf, the photoelectric effect, work function, threshold frequency, stopping potential, Einstein's equation, wave–particle duality and the de Broglie wavelength, with WAEC, NECO and UTME worked examples and a downloadable PDF.