Physics - A Mass Attached To A Spring Vibrates

____1. A mass attached to a spring vibrates back and forth. At maximum displacement, the spring force and the a. velocity reach a maximum. c. acceleration reach a maximum. b. velocity reach zero. d. acceleration reach zero. ____ 2. A simple pendulum swings in simple harmonic motion. At maximum displacement, a. the acceleration reaches a maximum. c. the acceleration reaches zero. b. the velocity reaches a maximum. d. the restoring force reaches zero. _____ 3. The angle between the string of a pendulum at its equilibrium position and at its maximum displacement is the pendulum’s a. period. c. vibration. b. frequency. d. amplitude. _____ 4. For a mass hanging from a spring, the maximum displacement the spring is stretched or compressed from its equilibrium position is the system’s a. amplitude. c. frequency. b. period. d. acceleration. _____ 5. For a system in simple harmonic motion, which of the following is the time required to complete a cycle of motion? a. amplitude c. frequency b. period d. revolution _____ 6. A wave travels through a medium. As the wave passes, the particles of the medium vibrate in a direction perpendicular to the direction of the wave’s motion. The wave is a. longitudinal. c. electromagnetic. b. a pulse. d. transverse. _____ 7. One end of a taut rope is fixed to a post. What type of wave is produced if the free end is quickly raised and lowered one time? a. pulse wave c. sine wave b. periodic wave d. longitudinal wave _____ 8. Each compression in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it? a. wavelength c. troughs b. crests d. amplitude _____9. Each stretched region in the waveform of the longitudinal wave shown above corresponds to what feature of the transverse wave below it? a. troughs c. wavelength b. crests d. amplitude _____ 10. Which of the following most affects the wavelength of a mechanical wave moving through a medium? Assume that the frequency of the wave remains constant. a. the nature of the medium c. the height of a crest b. the amplitude d. the energy carried by the wave _____ 11. Vibration of an object about an equilibrium point is called simple harmonic motion when the restoring force is proportional to a. time. c. a spring constant. b. displacement. d. mass. ____12. A pendulum swings through a total of 28°. If the displacement is equal on each side of the equilibrium position, what is the amplitude of this vibration? (Disregard frictional forces acting on the pendulum.) a. 28° c. 56° b. 14° d. 7.0° ____ 13. By what factor should the length of a simple pendulum be changed in order to triple the period of vibration? a. 3 c. 9 b. 6 d. 27 _____ 14. Sound waves a. are a part of the electromagnetic spectrum. b. do not require a medium for transmission. c. are longitudinal waves. d. are transverse waves. _____ 15. The wavelength of the fundamental frequency of a vibrating string of length L is a. 1/2 L. c. 2L. b. L. d. 4L. 16. The (frequency)_______ of a musical sound determines its pitch. _____ 17. Two waves traveling in opposite directions on a rope meet and undergo complete destructive interference. Which of the following best describes the waves a moment after the waves meet and coincide? a. The waves no longer exist. c. The waves reflect and travel backward. b. The waves continue unchanged. d. A single wave continues along the rope. _____18. When a positive charge moves in the direction of the electric field, what happens to the electrical potential energy associated with the charge? a. It increases. c. It remains the same. b. It decreases. d. It sharply increases, and then decreases. ______ 19. Which statement is the most correct regarding electric insulators? a. Charges within electric insulators do not readily move. b. Electric insulators have high tensile strength. c. Electric charges move freely in electric insulators. d. Electric insulators are good heat conductors ______ 20. Two point charges, initially 2 cm apart, are moved to a distance of 10 cm apart. By what factor does the resulting electric force between them change? a. 25 c.⅕ b. 5 d. 1/25 ______ 21. If the charge is tripled for two identical charges maintained at a constant separation, the electric force between them will be changed by what factor? a.1/9 c. 9 b.⅔ d. 18 ______ 22. Charge transfer between the plates of a capacitor stops when a. there is no net charge on the plates. b. unequal amounts of charge accumulate on the plates. c. the potential difference between the plates is equal to the applied potential difference. d. the charge on both plates is the same. _____ 23. When a capacitor discharges, a. it must be attached to a battery. b. charges move through the circuit from one plate to the other until both plates are uncharged. c. charges move from one plate to the other until equal and opposite charges accumulate on the two plates. d. it cannot be connected to a material that conducts _____24. When a mechanical wave’s amplitude is tripled, the energy the wave carries in a given time interval is increased by a factor of a. 3. c. 9. b. 6. d. 18. _____ 25. Two mechanical waves can occupy the same space at the same time because waves a. are matter. c. do not cause interference patterns. b. are displacements of matter. d. cannot pass through one another. _____ 26. When a straight line is drawn perpendicular to a flat mirror at the point where an incoming ray strikes the mirror’s surface, the angles of incidence and reflection are measured from the normal and a. the angles of incidence and reflection are equal. b. the angle of incidence is greater than the angle of reflection. c. the angle of incidence is less than the angle of reflection. d. the angle of incidence can be greater than or less than the angle of reflection. _____27. Which of the following best describes the image produced by a flat mirror? a. virtual, inverted, and magnification greater than one b. real, inverted, and magnification less than one c. virtual, upright, and magnification equal to one d. real, upright, and magnification equal to one _____28. Object distance, image distance, and radius of curvature are ____ for curved mirrors. A) interdependent C) directly related B) independent D) unrelated _____ 29. How is current affected if the number of charge carriers decreases? a. The current is not affected. b. The current increases. c. The current initially decreases and then is gradually restored. d. The current decreases. ______30. What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge? a. Electrons are added to the rod. c. Electrons are added to the fur. b. Protons are removed from the rod. d. The fur is left neutral. ______31. A repelling force occurs between two charged objects when the charges are of a. unequal magnitude. c. like signs. b. equal magnitude. d. unlike signs. ______32. An attracting force occurs between two charged objects when the charges are of a. unequal magnitude. c. unlike signs b. equal magnitude. d. like signs. ______33. Electric charge is a. found only in insulators. b. found only in a conductor. c. not conserved. d. conserved. ______34. Charge is most easily transferred in a. conductors. c. semiconductors b. nonconductors. d. insulators. ______35. A highly polished finish on a new car provides a ____ surface for ____ reflection. a. rough; diffused c. rough; regular b. specular; diffused d. smooth; specular _____ 36. Both insulators and conductors can be charged by a. grounding. c. polarization. b. induction d. contact. _____37. A surface charge can be produced on insulators by a. grounding. c. polarization. b. induction. d. contact. _____38. The figure above demonstrates charging by a. grounding. c. polarization. b. induction. d. contact. _____39. Which of the following is NOT true for BOTH gravitational and electric forces? a. The inverse square distance law applies. b. Forces are conservative. c. Potential energy is a function of distance of separation. d. Forces are either attractive or repulsive. ______40. Electric field strength depends on a. charge and distance. c. Coulomb constant and mass. b. charge and mass. d. elementary charge and radius ______41. A train moves down the track toward an observer. The sound from the train, as heard by the observer, is_____ the sound heard by a passenger on the train. a. the same as c. higher in pitch than b. a different timbre than d. lower in pitch than 42. The Tacoma Narrows Bridge collapsed in 1940 when winds caused (a standing wave) to build up in the bridge. 1. a 2. a 3. d 4. a 5. b 6. d 7. a 8. b 9. a 10. a 11. b 12. b 13. c 14. c 15. c 16. frequency 17. b 18. b 19. a 20. d 21. c 22. c 23. b 24. c 25. b 26. a 27. c 28. a 29. d 30. a 31. c 32. c 33. d 34. a 35. d 36. d 37. d 38. c 39. d 40. a 41. c 42. standing wave