1011 past contests
Topic 42 · Rms current in an ac circuit from rms voltage and impedance
Topic 37 · Tension in a string connecting two masses pulled by a horizontal force
Topic 10 · Internal energy of a monoatomic ideal gas from moles and temperature
Topic 45 · Lateral magnification magnitude of a convex mirror from focal length and object distance
Topic 7 · Resistance of a resistor from its dissipated power and current, $R = \dfrac{P}{I^2}$
Topic 11 · Time for angular speed to increase under constant angular acceleration
Topic 60 · Equivalent resistance of a resistor in parallel with a series pair
Topic 53 · Time airborne for an object dropped from 500 m, via h=½gt²
Topic 64 · Wavelength of a progressive wave from its wave-number k in the standard sinusoidal form
Topic 37 · Acceleration of an ideal atwood machine with masses 3 kg and 7 kg
Topic 14 · Thermal strain of an aluminum bar from its expansion coefficient and temperature change
Topic 10 · Total pressure of a mixed argon-oxygen flask after adding oxygen gas
Topic 37 · Atwood machine
Topic 51 · Average speed for a trip with a rest stop, from total distance and total time
Topic 59 · Power dissipated by a resistor from current and resistance, p=i²r
Topic 42 · Rc time constant of a resistor in series with a mixed series-parallel capacitor network
Topic 12 · Best experimental value of a repeated length measurement (the mean)
Topic 11 · Moment of inertia of a uniform sphere about a diameter, $I = \dfrac{2}{5}mr^2$
Topic 10 · Identifying which p-v-t-n graph pairs are non-linear for an ideal gas
Topic 10 · Pressure from evaporated liquid oxygen in an evacuated flask, via $PV = nRT$