1. When measuring the period of a pendulum, which of the following would result in a systematic error? A) Air resistance B) Faulty stopwatch C) Variations in gravitational field strength D) Friction at the pivot Answer: B) Faulty stopwatch 2. Which particle is responsible for mediating the strong nuclear force? A) Proton B) Neutron C) Gluon D) Electron Answer: C) Gluon 3. What is the principle of superposition as it applies to waves? A) The displacement of a medium is equal to the sum of the individual displacements from each wave. B) Waves cancel each other out when they meet. C) Waves double in amplitude when they intersect. D) The frequency of the resultant wave is the average of the individual waves. Answer: A) The displacement of a medium is equal to the sum of the individual displacements from each wave.