Physics Final Review

Chapters (5), (6.3), (7.1-7.2), (8.1), (9), (11), (16.1-16.2)

Part 1 Definitions: Be able to define the following, including units or lack of units (when possible). Also know the base units as well!!!

  1. Work
  2. Energy
  3. Kinetic Energy
  4. Potential energy
  5. Gravitational Potential Energy
  6. Work-kinetic energy theorem
  7. Elastic potential energy
  8. Spring constant
  9. Mechanical energy
  10. Power
  11. Momentum
  12. Perfectly inelastic collision
  13. Elastic collision
  14. Centripetal acceleration
  15. Circular motion
  16. Tangential speed
  17. Gravitational force
  18. Gravitational constant
  19. Gravitational field strength
  20. Fluid
  21. Solid
  22. Liquid
  23. Gas
  24. Density
  25. Buoyancy
  26. Apparent weight
  27. Heat
  28. Temperature
  29. Internal energy
  30. Thermal equilibrium
  31. Celsius
  32. Fahrenheit
  33. Kelvin
  34. Absolute Zero
  35. Thermal Conduction
  36. Thermal Convection
  37. Thermal Radiation
  38. Thermodynamics
  39. Specific heat
  40. Calorimetry
  41. Phase Change
  42. Latent Heat
  43. Simple harmonic motion
  44. Wave
  45. Damping
  46. Amplitude
  47. Period
  48. Frequency
  49. Medium
  50. Mechanical wave
  51. Transverse wave
  52. Longitudinal wave
  53. Crest
  54. Trough
  55. Wavelength
  56. Constructive interference
  57. Destructive interference
  58. Standing wave
  59. Node
  60. Antinode
  61. Electric conductor
  62. Electric Insulator
  63. Induction
  64. Charge
  65. Coulomb’s Law

Part 2 Problems: Answer the following questions, showing your work, on another sheet of paper.

66.An oil drop has a mass of 9.8x10-15 kg and is suspended in midair halfway between two identically charged plates. The distance between the plates is 60 cm, and the drop is located directly in between them. The charge of the top plate is positive and the bottom plate is negative at 1.0 µC. Calculate the number of excess electrons located on the oil drop.

67.A 155 g sample of 14.0 °C water is mixed with a 35.5 g sample of 148.8 °C iron. Assuming no heat is lost to the surroundings, calculate the final temperature.

68. A worker pushes a box with a horizontal force of 50.0 N over a level distance of 5.0 m. If a frictional force of 43 N acts on the box in a direction opposite to that of the worker, what net work is done on the box?

69.A professional skier starts from rest and reaches a speed of 56 m/s on a ski slope angled 30.0 above the horizontal. Using the work-kinetic energy theorem and disregarding friction, find the minimum distance along the slope the skier would have to travel in order to reach this speed.

70. Mr. Vice, who has a mass of 71 kg, was shredding on his 4.55 kg skateboard at 7.5 m/s. Calculate the final velocity of the skateboard if Mr. Vice jumps off the front of the board at 9.0 m/s.

71. Three particles are placed horizontally on a straight line. The left particle has a charge of +3.0 x 1010 C, the middle particle has a charge of -2.5 x 1010 C, and the right particle has a charge of +4.2 x 1010 C. The left particle is 78 nm from the middle particle, and the right particle is 37 nm from the middle particle. Calculate the net force on rightmost particle.

72.The moon has a radius of 1.74 x 106 m. What is the gravitational force between the moon and an 85 kg astronaut?

73.A 1.3 x 103 kg car traveling with a speed of 2.5 m/s executes a turn with a 7.5 m radius of curvature. Calculate the centripetal acceleration of the car and the centripetal force acting on the car.

74.An empty rubber balloon has a mass of 0.012 kg. When the balloon is filled with helium (density 0.179 kg/m3) it increases in size to have a radius of 0.5 m. If air has a density of 1.29 kg/m3, calculate the magnitude of the net force acting on the balloon.

75. Calculate how much energy is required to raise the temperature of 12 kg of mercury from -50.0 °C to 200.0 °C. Mercury boils at 357°C and melts at -39°C.

76.Scooby Dooby Doo is playing billiards. He hits the cue ball with a velocity of 3.5m/s directly at the 8-ball that is initially at rest. If both balls have identical mass and the 8-ball left the collision at 1.5 m/s at an angle of 25 degrees, calculate the final velocity of the cue ball.

77.Tarzan swings on a vine from an incident angle of 9o from the vertical with a period of 3.8 s. Calculate the length of the vine that supports Tarzan if he has a mass of 90 kg.

78.Calculate the direction and magnitude of the force exerted on an electron located 1.5x10-10 m from the nucleus of a tin atom, with a charge of 50 protons.

79. Calculate the frequency of a light wave if the distance from the crest to crest of the wave is 535 nm.

80.A 125 N object hangs from a spring oscillating with a frequency of 0.281 Hz. Calculate the spring constant of the spring.

Specific heats:

water: 4186 J/kg•°C Heat of fusion:

Ice:2060 J/kg•°C ice: 3.34 x 105 J/kg

steam: 2020 J/kg•°Ciron: 2.66 x 105 J/kg

iron: 450J/kg•°C mercury: 2.32 x 104 J/kg

mercury (l) 138J/kg•°CHeat of vaporization:

mercury (s) 1160 J/kg •°C water: 2.26 x 106 J/kg

mercury (g) 1040 J/kg •°Cmercury: 2.72 x 105 J/kg

66: 3 electrons

67: 10.6oC

68: 35 J
69: 320 m
70: -23 m/s
71: 6.04 x 105 N (Left)

72: 140 N

73: ac = 0.83 m/s2; Fc = 1.1 x 103 N
74: 5.59 N up
75: 4.9 MJ
76: 2.2 m/s @ 17o

77: 3.6 m

78: 5.13 x 10-7 N (attractive)
79: 5.61 x 1014 Hz
80: 39.7 N/m