Review for Lab Final

1. Review for Lab Final

2. What type of interference happens when two completely out of phase waves occupy the same medium at the same time • A) Completely Destructive • B) Completely Constructive • C) Partially Destructive • D) Not Enough Information

3. In the Superposition of Waves experiment, we added two different waves together to create a changing interference pattern. This could be called _______. • A) Constructive interference • B) Destructive interference • C) Partially constructive interference • D) All of the above • E) None of the above

4. A transverse wave is a wave that causes the medium to vibrate _______ to the direction of motion while a longitudinal wave causes the medium to vibrate _______ to the direction of motion. • A) Parallel, perpendicular • B) Perpendicular, parallel

5. If a wave has a frequency of 10 Hz, what is its period? • A) 10 seconds • B) 100 Seconds • C) 1 second • D) 0.1 second

6. Which is the most accurate way to measure the frequency of a standing wave on a string? • A) Use a stopwatch to time how many waves pass over a length of time then divide that number by the length of time. • B) Set up an adjustable strobe light and adjust it until the wave appears to be standing still. • C) Stare at the string hopelessly and try to guess the right answer. • D) This is a trick question: All standing waves have the same frequency since they travel through air.

7. What harmonic and what overtone are depicted in the vibrating string shown below: • A) Second and Second • B) Fourth and Third • C) Fourth and Fourth • D) Third and Second • E) Fifth and Fourth

8. Find the nodes: • A) 1 • B) 2 • C) 3 • D) 4 • E) 2 & 4 • F)1, 3 & 5 2 1 4 3 5

9. c b a Identify a, b, and c: • A) a = wavelength, b = crest, c = trough • B) a = amplitude, b = crest, c = baseline • C) a = wavelength, b = amplitude, c = trough • D) a = wavelength, b = amplitude, c = baseline

10. What happens to the wavelength of a standing wave if the tension is increased? • A) Wavelength decreases • B) Wavelength increases • C) Wavelength stays the same

11. In the Organ Pipe lab, the pipe length of a closed pipe was changed in order to get a(n) _______ at the open end of the pipe. • A) Antinode • B) Node • C) Overtone • D) Wavelength

12. Closed pipes support harmonics that are _____, while open pipes support _____ harmonics. • A) Even, Odd • B) Odd, Even • C) Even, All • D) Odd, All

13. In the Organ Pipe experiment, we created harmonics in open and closed pipes. A standing wave in an open pipe is characterized by _______ at one end of the pipe and a _______ at the other end of the pipe. • A) Node; Node • B) Node; Antinode • C) Antinode; Antinode • D) None of the above

14. What harmonics can be produced by a closed organ pipe? • A) Even • B) Odd • C) All • D) Depends on the medium of oscillation

15. In the Types of Spectra experiment, you viewed various spectra from different elements. What type of spectra is shown below? • A) Discrete • B) Continuous • C) Discrete and Continuous • D) Neither

16. A discrete emission spectrum is produce by a: • A) Cool, dense gas • B) Hot, dense gas • C) Cool, low density gas • D) Hot, low density gas

17. An incandescent solid produces what kind of spectra? • A) Discrete • B) Continuous • C) Absorption • D) Both A and B

18. Hot liquids exhibit what kind of spectrum? • A) Continuous • B) Discrete emission • C) Both Discrete and Continuous • D) Can’t Know

19. How is the radius of curvature (R) related to the focal length (f) of a curved mirror? • A) • B) • C) • D)

20. In The Ray Box: Part One experiment, we found that flat mirrors ____________ light rays. • A) Converge • B) Diverge • C) Redirect • D) Absorb • E) Emit

21. Convex lenses _______ light and convex mirrors _______ light. • A) Converge, converge • B) Converge, diverge • C) Diverge, converge • D) Diverge, diverge

22. Any two colors that add to give white are said to be • A) Additive primaries • B) Subtractive primaries • C) Complementary colors • D) Supplementary colors

23. In The Ray Box: Part Two experiment, what were the colors known as additive primaries and subtractive primaries, respectively? • A) Red, Green and Blue | Yellow, Cyan and Magenta • B) Red, Cyan and Yellow | Blue, Green and Magenta • C) Magenta, Yellow and Blue | Green, Cyan and Red • D) Yellow, Cyan and Magenta | Red, Green and Blue

24. The fundamental difference between the additive and subtractive primaries is that • A) Additive primaries combine to make white light while subtractive primaries remove all wavelengths of visible light. • B) Subtractive primaries combine to make white light while additive primaries remove all wavelengths of light. • C) Subtractive primaries are not as pretty as additive primaries. • D) Subtractive primaries have much higher energy levels than additive primaries.

25. The Law of Refraction is applied to • A) Mirrors • B) Color addition • C) Color subtraction • D) Lenses

26. What is the final image produced by a terrestrial telescope? • A) Upright, real, magnified • B) Upright, virtual, magnified • C) Inverted, virtual, diminished • D) Inverted, real, magnified

27. What is the difference between real and virtual images? • A) Real images are always smaller than virtual images • B) Virtual images are always inverted • C) With a real image, the light rays physically converge at the point that the image appears at. With a virtual image, they do not. • D) Real images are simply an optical illusion and don’t really exist.

28. In the Telescope lab, how many lenses and what kind were used in the terrestrial telescope? • A) 2 Convex Lenses • B) 2 Concave Lenses • C) 3 Convex Lenses • D) 1 Convex Lens and 1 Concave Lens

29. In the Graphing lab, a formula was presented that represents the shape of a straight, best fit line. What is this formula? • A) • B) • C) • D)

30. You draw a best fit line by: • A) Connecting each of your data points together and creating a line • B) “Fitting” the line to your data points so that each side of the line has an equal number of points • C) Using two data points to find the equation of the line, then graphing that equation • D) Drawing a straight line from the origin to your last data point

31. The independent variable is plotted on the _ , while the dependant variable is plotted on the_______. • A) ordinate, abscissa • B) abscissa, ordinate • C) Y, X

32. In the Simple Pendulum experiment, when the mass of the pendulum increases, the period of the pendulum • A) decreases • B) increases • C) does not change

33. What is the period of a simple pendulum • A) • B) • C) • D)

34. Remember that . If the acceleration due to gravity of the moon is 1/6 of the acceleration on Earth, and if the period is T on the earth, what is the period of the same pendulum on the moon? • A) • B) • C) • D)

35. If a grandfather clock were running too quickly, how would you correct this? • A) Shorten the length of the pendulum • B) Lengthen the length of the pendulum • C) Increase the mass • D) Increases the acceleration due to gravity

36. From the figure below what is the resultant vector? • A) No resultant • B) • C) • D)

37. What do we call a quantity defined only by a magnitude? • A) A vector • B) A resultant • C) A scalar • D) An axis

38. In the Addition of Vectors lab, some examples of vectors and scalars were listed in the PowerPoint show. Which one of the choices below is a scalar? • A) Work • B) Force • C) Momentum • D) Velocity

39. What is the fundamental difference between elastic and inelastic collisions? • A) With elastic collisions, energy and momentum are conserved. With inelastic, only momentum is conserved. • B) With elastic collisions, neither energy nor momentum are conserved, whereas with inelastic collisions, momentum is conserved. • C) With inelastic collisions, only energy is conserved. With elastic collisions, energy and momentum are conserved. • D) With elastic collisions, energy is conserved. With inelastic collisions, momentum is conserved.

40. Ball A with a mass of 2M traveling with a velocity Vo hits Ball B which is at rest and has a mass of 1M. They stick together and travel across the floor. Using the Conservation of Linear Momentum, what is the velocity of Ball A and Ball B after the collision? • A) • B) • C) • D)

41. When two objects of different mass are dropped from the same height in the absence of air resistance, which object has greater speed just before impact? • A) The lighter object • B) Neither object • C) The heavier object • D) Depends on the density of the objects

42. An object in the absence of air resistance has a horizontal component of velocity that changes during its flight. • A) True • B) False

43. On a vertical loop amusement park ride, at the top of the loop a centripetal force is applied • A) To the cart by the track • B) To the track by the cart • C) To the cart by the air • D) Centrifugal force is applied, not centripetal force

44. What force is a rope exerting on a bucket swung in a vertical circle? • A) Centripetal • B) Centrifugal • C) Frictional • D) None of the above

45. The centrifugal force is a real force • A) True • B) False

46. How did we calculate the centripetal force of the spinning mass in the centripetal force experiment? • A) Compare the centripetal force to the force necessary to position the bob at a distance R from its rotation axis • B) Spin it and count the number of Newtons acting on the mass • C) Multiply the angular velocity by the acceleration due to gravity • D) Use Newton’s version of Kepler’s3rd law to calculate the centripetal force using the period of rotation