1011 past contests
Topic 19 · Identifying the final nuclide of a decay chain
Topic 4 · Total kinetic energy of a two-particle system
Topic 57 · Current from a series-parallel resistor network with internal resistance
Topic 43 · Energy density stored in the field of a parallel plate capacitor
Topic 4 · Net force on a variable-mass object
Topic 58 · Reading resistance from a resistor colour code
Topic 62 · Sound intensity from an isotropic point source
Topic 34 · Force from the impulse-momentum theorem
Topic 22 · Relativistic kinetic energy at a significant fraction of light speed
Topic 16 · Rise in liquid level from a submerged object's volume
Topic 13 · Acceleration of a charged particle between parallel plates
Topic 20 · Identifying a nuclide from a neutron-alpha bombardment reaction
Topic 39 · Transformer secondary voltage from the turns ratio
Topic 13 · Potentiometer: emf from a balancing length
Topic 18 · Photoelectric effect: fastest electron speed (case 1)
Topic 18 · Photoelectric effect: fastest electron speed (case 2)
Topic 11 · Combined translational and rotational kinetic energy of a rolling cylinder
Topic 48 · Critical angle for total internal reflection
Topic 16 · Gauge pressure at a given depth in a tank
Topic 34 · Ranking particles by linear momentum and kinetic energy