1011 past contests
Topic 4 · Finding mass from net force and acceleration, $F = ma$
Topic 7 · Finding resistance from power and voltage, $R = \dfrac{V^2}{P}$
Topic 59 · Power dissipation from voltage and resistance, current and resistance, and a resistor-in-paraffin problem of the day
Topic 50 · Vertical velocity component of a projectile launched below the horizontal, 20√2m/s at 45°
Topic 50 · Vertical velocity component of a projectile launched below the horizontal, 60m/s at 30°
Topic 50 · Vertical velocity component of a projectile launched above the horizontal, 40m/s at 30°
Topic 36 · Normal force on an inclined plane, fn=w cosθ, 48n/60°
Topic 14 · True or false: a solid at rest begins to move as soon as its molecules begin to move
Topic 14 · True or false: when a solid moves, its molecules' average velocity is in the direction of motion
Topic 43 · The farad is the si unit of capacitance
Topic 14 · True or false: a solid at rest remains at rest because its molecules are stationary
Topic 19 · Number of half-lives for a 192g sample to decay to 0.375g
Topic 16 · Gauge pressure at a given depth in a liquid, p=ρgh, variant 1.5e3kg/m³/1.2m
Topic 16 · Depth for a given gauge pressure in a liquid, p=ρgh
Topic 43 · Finding one series capacitance from the equivalent capacitance and the other
Topic 61 · Riddle: the simple pendulum, a mass on a pivot studied famously in a cathedral
Topic 34 · True or false: in a head-on collision, kinetic energy gained by one object equals that gained by the other
Topic 34 · True or false: in a head-on collision, one object's speed increase equals the other's speed decrease
Topic 34 · True or false: in a head-on collision, momentum gained by one object equals momentum lost by the other
Topic 5 · True or false: the induced charge on a conductor near a point charge is uniformly distributed