1 / 53

A longitudinal wave is:

A longitudinal wave is:. A wave where the oscillation is perpendicular to the direction of motion A wave where the oscillation is in the same direction as the direction of motion. How many nodes and antinodes?. 4, 5 5, 8 5, 4 4, 8.

phuoc
Download Presentation

A longitudinal wave is:

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. A longitudinal wave is: • A wave where the oscillation is perpendicular to the direction of motion • A wave where the oscillation is in the same direction as the direction of motion

  2. How many nodes and antinodes? • 4, 5 • 5, 8 • 5, 4 • 4, 8

  3. If the amplitude is twice as big, which of the following is true of a pendulum? • The pendulum swings twice as far away from the center • Its period is twice as long • Its frequency is twice as high • It must have twice the mass

  4. In any system in simple harmonic motion, the restoring force acting on the mass in the system is proportional to • Displacement • The length of a pendulum • The mass • frequency

  5. Which of the following sources of sound has the shortest wavelength? • A female soprano singer at 2,000 Hz • A bass guitar at 150 Hz • A male voice at 500 Hz • The rumble of thunder at 75 Hz

  6. Leader Board

  7. In an oscillating mass-spring system, the velocity of the mass is greatest when the mass is • At the point of maximum displacement • Halfway between the equilibrium point and maximum displacement • At a point where acceleration is greatest • At the equilibrium point

  8. Two successive crests of a transverse wave are 1.20 m apart. Eight crests pass a given point every 12.0 s. What is the wave speed? • 0.667 m/s • 1.80 m/s • 0.800 m/s • 9.60 m/s

  9. The period of a pendulum may be decreased by • Shortening its length • Increasing the mass of the bob • Moving its equilibrium point • Decreasing the mass of the bob

  10. If the pendulum completes exactly 12 cycles in 2.0 minutes, what is the frequency of the pendulum? • 0.10 Hz • 0. 17 Hz • 6.0 Hz • 10 Hz

  11. As the swinging bob of a pendulum moves farther from its equilibrium position, the pendulum’s _________ increases • Frequency • Mass • Restoring force • Length

  12. Leader Board

  13. A The period of this wave is… • 2 seconds • 4 seconds • 6 seconds

  14. A The amplitude of this wave is… • 4.8 meters • 4.0 meters • 2.4 meters

  15. The GPE of the bob of a swinging pendulum is at its maximum when the bob is at • Maximum displacement • The equilibrium point • The center of its swing • Minimum displacement

  16. In a system in simple harmonic motion, the amplitude depends on • Frequency • Wavelength • The position of the equilibrium point • Energy of the system

  17. A wave with an amplitude of 0.75 m has the same wavelength as a second wave with an amplitude of 0.53 m. The two waves interfere. What is the amplitude of the resultant wave if the interference is constructive? • 0.22 m • 0.53 m • 0.75 m • 1.28 m

  18. Leader Board

  19. A slinky is stretched to a length of 7 m. All of the following standing wave wavelengths are possible except… • 21 m • 14 m • 7 m • 3.5 m

  20. A total of 5 s passes as a child completes one complete swing on a playground swing. The period of the swing is • 1/5 s • 20 s • 5 s • 1 s

  21. The frequency of a certain pendulum is 0.5 Hz. The period of this pendulum is • 0.2 s • 0.5 s • 2 s • 5 s

  22. Which of the following factors has the greatest effect on the frequency of a swinging pendulum? • Friction • Amplitude • Mass • Length

  23. If a given pendulum is moved from Earth to a location where the gravitational acceleration is greater than Earth’s, the frequency of the pendulum’s swing will • Increase • Decrease • Be unchanged • Vary with the mass of the bob

  24. Leader Board

  25. You have constructed an oscillating mass-spring system for an experiment. In order to increase the frequency of the system, you could • Decrease the initial displacement • Use a greater mass • Use a spring with a higher spring constant • Increase the period of oscillation 10

  26. A wave with an amplitude of 0.75 m has the same wavelength as a second wave with an amplitude of 0.53 m. If the two waves destructively interfere, what is the amplitude of the resultant wave? • 0.22 m • 0.53 m • 0.75 m • 1.28 m 10

  27. If the length of a pendulum gets longer, the period of the pendulum: • Gets longer • Gets shorter • Stays the same • Not enough information 10

  28. The material through which a mechanical wave travels is • A medium • Empty space • Water • Air 10

  29. When a transverse wave passes through water, water molecules are displaced • Permanently in the direction of the wave motion • Permanently in a direction perpendicular to the wave • Temporarily in the direction of the wave motion • Temporarily in a direction perpendicular to the wave 10

  30. Leader Board

  31. A wave that is produced by a single motion that does not repeat is a ________. • Transverse wave • Continuous wave • Pulse • Compression 10

  32. The distance between two successive troughs of a transverse wave is the wave’s • Amplitude • Wavelength • Frequency • Rarefaction 10

  33. Suppose you are dangling your foot in a swimming pool, making ripples (waves) by moving your foot up and down. What could you do to make the ripples travel faster through the water? • Move your foot up and down more frequently • Move your foot up and down less frequently • Move your foot up and down more strongly • None of the above 10

  34. When a wave on a rope strikes a free boundary, the wave is • Reflected and inverted • Reflected but not inverted • Not reflection • absorbed 10

  35. A wave is passing through a uniform medium. As the frequency of this wave increases, its wavelength • Depends on amplitude • Decreases • Increases • Does not change 10

  36. Leader Board

  37. If the amplitude of a mechanical wave is tripled, the rate of energy transfer of the wave is _____ . • Increased by a factor of 9 • Decreased by a factor of 9 • Increased by a factor of 3 • Decreased by a factor of 3 10

  38. A ____ wave travels through a medium as a series of compressions and rarefactions. • Sine • Longitudinal • Pulse • Transverse 10

  39. When two transverse waves traveling through a medium meet and exactly coincide, the resulting displacement of the medium • Is the sum of the displacements of each wave • Is zero • Is always greater than the displacement of either wave alone • Is always destructive 10

  40. When two waves having displacements in opposite directions meet, ____ occurs. • Complete destructive interference • No interference • Constructive interference • Destructive interference 10

  41. A wave pattern on a stretched string appears to be stationary. This wave pattern is an example of • A longitudinal wave • A non-periodic wave • A pulse wave • A standing wave 10

  42. Leader Board

  43. In a standing wave on a vibrating string, a point that appears to remain stationary is a(n) • Antinode • Point of constructive interference • Node • rarefaction 10

  44. An ocean wave has a frequency of 2 Hz and a speed of 20 m/s. What is the wavelength of this wave? • 0.1 m • 5 m • 10 m • 40 m 10

  45. Two waves meet and interfere constructively. Which one of the following factors increases? • Period • Frequency • Wavelength • None of the above 10

  46. You sit in the audience and listen to a concert band play. Which instruments sound reaches your ears first, the flute or the trombone? • The flute • The trombone • They reach your ears at the same time. 10

  47. If a 48 kg mass oscillates on a spring with a spring constant of 12 N/m, what is the period of the oscillation? • 8π seconds • 4π seconds • π seconds • π/2 seconds 10

  48. Leader Board

  49. A certain oscillating mass-spring system has a period of 1.2 s with a 1.0 kg mass. What will the period be when a 4.0 kg mass is substituted for the 1.0 kg mass? • 4.8 s • 2.4 s • 0.6 s • 0.3 s 10

  50. The spring constant in a given oscillating mass-spring system may be changed by • Increasing the mass • Decreasing the mass • Decreasing the initial displacement • None of the above 10

More Related