1011 past contests
Topic 19 · Activity of a radionuclide from the decay constant
Topic 50 · Projectile range from initial kinetic energy
Topic 38 · Magnitude of the resultant of several vector forces
Topic 9 · Image height from magnification given object and image distances
Topic 2 · Gravitational field strength from escape velocity
Topic 18 · Photoelectric effect: factor determining photoelectric current
Topic 50 · Projectile motion: time of flight on level ground
Topic 13 · Kirchhoff's current law and conservation of charge
Topic 31 · Work done by an ideal gas in isothermal expansion
Topic 19 · Radioactive decay: activity after a whole number of half-lives
Topic 59 · Power dissipation in a resistor from ohm's law relationships
Topic 33 · Internal energy of a monatomic ideal gas from heat capacity
Topic 46 · Magnification produced by a converging lens (virtual image)
Topic 22 · Rest energy of a particle from its mass using mass-energy equivalence
Topic 62 · Sound intensity level in decibels from intensity relative to the reference threshold
Topic 29 · Mean single-axis velocity component of gas molecules in random isotropic motion
Topic 37 · Tension in a string connecting a mass on a table to a hanging mass over a pulley
Topic 29 · Rms speed of gas molecules from density and pressure using kinetic theory
Topic 44 · Self-inductance of an air-cored solenoid from its dimensions and number of turns
Topic 14 · Relating young's modulus to bulk modulus and poisson's ratio for an isotropic solid