1011 past contests
Topic 38 · Magnitude of the resultant of two perpendicular forces
Topic 37 · Acceleration of two connected masses pulled by a horizontal force
Topic 37 · Tension in a string connecting two masses under an applied force
Topic 4 · Acceleration of a mass from two opposing horizontal forces
Topic 12 · Identifying which quantities are not signed (always non-negative)
Topic 3 · Identifying vector vs scalar quantities, and work done by a net force
Topic 55 · How electrical conductivity varies with rising temperature: metal, semiconductor and insulator
Topic 5 · Riddle: the gold-leaf electroscope
Topic 10 · An ideal gas does not condense on cooling (true/false)
Topic 10 · Internal energy of an ideal gas depends only on temperature (true/false)
Topic 19 · Radioactive decay rate is proportional to, not equal to, the number of particles present (true/false)
Topic 31 · Isobaric expansion work exceeds isothermal expansion work for the same volume change (true/false)
Topic 19 · Decay constant from half-life
Topic 34 · Force equals the rate of change of momentum, not impulse (true/false)
Topic 11 · Torque, not impulse, equals the rate of change of angular momentum (true/false)
Topic 16 · Weight in air of a submerged object from spring-balance reading and upthrust
Topic 45 · Focal length of a concave mirror from its radius of curvature
Topic 45 · Focal length of a concave mirror from object distance when image forms at the object's location
Topic 64 · Wave speed from wavelength and period
Topic 61 · Critical damping reaches equilibrium fastest without oscillation