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PH105-106 mcat review

  1. Average Velocity
    & Units
    Image Upload 2

    m/s
  2. Average Acceleration
    & Units
    Image Upload 4


    m/s2
  3. Velocity at time t with acceleration a:
    Units?
    Image Upload 6

    m/s
  4. Distance at time t with acceleration a:
    Units?
    Image Upload 8


    meters
  5. Find velocity at a point d with acceleration a:
    Image Upload 10
  6. distance at time t without acceleration a:
    Image Upload 12
  7. Average Velocity:
    Image Upload 14
  8. On an xy axis with a velocity with angle Image Upload 16 between velocity and the x axis, What is the X component of the velocity? What is the Y component of velocity?
    Image Upload 18

    Image Upload 20
  9. Common Trigonometric Functions:

    sin 0
    cos 0
    tan 0
    • sin 0 = 0
    • cos 0 = 1
    • tan 0 = 0
  10. sin15
    cos15
    tan15
    • sin15=0.259
    • cos15=0.966
    • tan15=0.268
  11. sin30
    cos30
    tan30
    • sin30=0.5
    • cos30=0.866
    • tan30=0.577
  12. sin45
    cos45
    tan45
    • sin45=0.707
    • cos45=0.707
    • tan45=1
  13. sin60
    cos60
    tan60
    • sin60=0.866
    • cos60=0.5
    • tan60=1.73
  14. sin75
    cos75
    tan75
    • sin75=0.966
    • cos75=0.259
    • tan75=3.73
  15. sin90
    cos90
    tan90
    • sin90=1
    • cos90=0
    • tan90= not possible.
  16. Define momentum:
    What are it's units?
    Image Upload 22

    kg m/s or N s
  17. Define Impulse:
    • Image Upload 24
    • But is more useful as: Change in Momentum
    • Image Upload 26
  18. Define Work:
    What are the Units?
    • Image Upload 28 where theta is the angle between F and d
    • Its units are Joules (N m)
  19. Define Power
    What are the units?
    Image Upload 30

    It is Joules/s or Watts.
  20. Define Kinetic Energy:
    Image Upload 32

    the Joule
  21. Define PotentialG Energy
    Image Upload 34

    The Joule
  22. When is total mechanical energy conserved?
    When the sum of PE and KE is constant
  23. What is the Work Energy Theorum?
    • All work performed is equal to the Change in Kinetic Energy:
    • Image Upload 36
  24. What is the Conservation of Energy?
    • When there are not any nonconservitive forces acting on a system, the total mechanical energy remains constant.
    • Friction is one example of a nonconserved force.
  25. Which of the following are Scalar?
    Work?
    Energy?
    Momentum?
    Power?
    Impulse?
    Distance?
    Velocity?
    Acceleration?
    Force?
    Time?
    • Work,
    • Power,
    • Energy,
    • Time,
    • Distance.
  26. Which of the following are Vectors?
    Work?
    Energy?
    Momentum?
    Power?
    Impulse?
    Distance?
    Velocity?
    Acceleration?
    Force?
    Time?
    • Momentum,
    • Impulse,
    • Velocity,
    • Acceleration,
    • Force.
  27. What is characteristic of Elastic collisions?
    KE is conserved
  28. What is Characteristic of inelastic Collisions?
    KE is not conserved
  29. What is Characteristic of perfectly inelastic collisions?
    The objects stick together.
  30. What is Newtons 1st Law?
    The law of inertia; bodies in motion or rest tend to stay at motion or rest, unless acted on by net force.
  31. What is Newtons 2nd Law?
    • Net force and net acceleration are in the same direction.
    • Image Upload 38
  32. What is Newtons 3rd Law?
    • The law of force pairs. Equal and opposite force. 
    • Image Upload 40
  33. What is the Law of gravitation?
    Image Upload 42
  34. Is mass or weight a vector?
    Weight is a vector. W=mg and is the earth's gravitational pull on the mass. the direction is towards the earth.
  35. Is mass scalar or a vector?
    It is scalar. It is only a measure of inertia.
  36. What is Fc?
    The force necessary to keep an object moving in circular motion.
  37. Define a radian:
    • 1 radian is the portion of the circumference that is equal in length to the radius.
    • Image Upload 44

    Image Upload 46
  38. Define angular velocity
    Image Upload 48
  39. Define angular acceleration:
    Image Upload 50
  40. How is linear velocity related to angular velocity?
    vImage Upload 52
  41. How is linear acceleration related to rotational acceleration?
    Image Upload 54
  42. given the frequency, define angular velocity:
    Image Upload 56
  43. Define period T
    Image Upload 58
  44. What must be true or constant to correctly apply the kinematic equations?
    a or Image Upload 60 must be constant.
  45. Find angular velocity at time t with angular acceleration given.
    Image Upload 62
  46. what is the angular velocity given the number of rotations at a given angular acceleration?
    Image Upload 64
  47. find find the number of radians traversed given time and angular acceleration:
    Image Upload 66
  48. define average angular velocity:
    Image Upload 68
  49. Define torque:
    Image Upload 70
  50. What is the relation between torque and moment of inertia?
    |Image Upload 72
  51. Define rotational kinetic energy:
    Image Upload 74
  52. In rotational kinematics what does I play, and how is that different from linear kinematics?
    I is the moment of inertia, and it replaces mass. It depends on both the scalar quantity of mass and the physical distribution of the mass.
  53. Define Angular momentum:
    Image Upload 76
  54. Define Newton's second law in terms of angular momentum:
    Image Upload 78
  55. Define center of mass:
    • Location of balance on linear object.
    • Image Upload 80
  56. Define density:
    what are the units/
    Image Upload 82

    kg/m3
  57. Define specific gravity:
    Image Upload 84

    no units
  58. define weight:
    Image Upload 86
  59. Is pressure scalar or a vector
    Scalar
  60. Define Pressure:
    What are the Units?
    Image Upload 88

    N/m2=1Pa
  61. What is standard atmospheric Pressure?
    Image Upload 90
  62. Define gauge pressure:
    Image Upload 92
  63. Define absolute pressure:
    Image Upload 94

    • where P0 is the surface pressure.
    • Must be a static fluid.
  64. Define Buoyant Force for a given fluid:
    • Image Upload 96
    • upward only
  65. Define flow rate:
    Image Upload 98

    m3/s
  66. Define the flow of a fluid through varying diameters:
    Image Upload 100
  67. Define Bernoulli's Equation:
    PImage Upload 102
  68. For an Enclosed Fluid, Define Pascal's principle:
    Image Upload 104
  69. How does Pascal's equation relate to work?
    Image Upload 106
  70. Define Coulomb's Law:
    What are the Units?
    Image Upload 108

    Newtons.
  71. For Electrostatics, define the constant k:
    Image Upload 110
  72. Define Electric Field:
    Image Upload 112

    N/C or V/m
  73. What is the difference between equipotential lines and field lines?
    • Equipotential are all at the same potential and lie perpendicular to the field lines.
    • Field lines Go from High potential to low Potential, and radiate from Charges.
  74. Define Electric Potential:
    Image Upload 114

    Volt=V=J/C
  75. Define the potential difference between two charged plates at distance d between them:
    Image Upload 116
  76. Define Voltage:
    Image Upload 118
  77. Define Electrical Potential Energy:
    Image Upload 120

    • notice that the radius is not squared!
  78. Does work done by the electrostatic force result in an increase or decrease in Potential Energy?
    Decrease
  79. Does work done against the electrostatic force result in an increase or decrease in Potential Energy?
    Increase.
  80. Define Current:
    Image Upload 122

    Flow of electric charge. Amp=C/s
  81. Define Ohm's Law:
    • V=IR
    • Where V is voltage,
    • I is Current,
    • R is Resistance.
  82. How is resistance affected by temperature?
    Resistance increases with increasing temperatures in most conductors.
  83. What are the units of Resistance?
    Image Upload 124 R=V/I
  84. Define the Power dissipated by a Resistor:
    Image Upload 126
  85. What does the Power dissipated by a resistor apply to?
    It Can apply to either the whole circuit or to individual resistors.
  86. Define Capacitance:
    • Capacitance Image Upload 128
    • Coulombs/V.
  87. What is the mathematical principle for capacitors in parallel?
    Image Upload 130
  88. What is the mathematical principle for capacitors in series?
    Image Upload 132
  89. Define Gauss's Law:
    Image Upload 134
  90. Define the dielectric constant:
    Image Upload 136
  91. What are Kirchoff's Laws?
    • 1. At any junction within a circuit, the sum of current entering must equal the current leaving.
    • 2. The sum of voltage sources equals the sum of voltage drops around a closed circuit loop.
  92. How do R, I and V add in parallel?
    • 1/Req=1/R1+1/R2+1/R3
    • I=I1+I2+I3
    • V=V1=V2=V3
  93. How do R, I and V add in series?
    • Req=R1+R2+R3
    • I=I1=I2=I3
    • V=V1+V2+V3
  94. Define Vrms, Irms, and Pavg for Alternating current:
    Image Upload 138

    • Image Upload 140
    • Image Upload 142
  95. What does adding a dielectric do to the Capacitance?
    • It increases it:
    • Image Upload 144
  96. What is a dielectric?
    an insulator.
  97. Define Tesla T
    Image Upload 146
  98. Define Period T:
    T=time to complete 1 cycle
  99. Define frequency f:
    Image Upload 148
  100. What is the angular frequency?
    • It is equal to angular velocity, and given in rad.
    • Image Upload 150
  101. What is Simple Harmonic Motion (SHM)?
    It is a periodic motion where the period (T) (and frequency) is independent of the amplitude.
  102. What is wavelength?
    It is the distance between 2 corresponding points on consecutive pulses. So crest to crest, or trough to trough.
  103. What is the Velocity of a wave in a spring?
    vImage Upload 152
  104. What is the speed of a wave given f and wavelength?
    Image Upload 154
  105. Do electromagnetic waves need a medium?
    NO. light for example.
  106. what is the speed of light?
    c=3x108m/s
  107. What is the wavelength for a string attached at each end?
    Image Upload 156
  108. What is the wavelength for an open pipe?
    Image Upload 158
  109. What is the wavelength for a closed pipe?
    Image Upload 160
  110. How does sound intensity add and subtract?
    • Adding 10dB is like multiplying the Intensity by 10.
    • Subtracting 10dB is like dividing the Intensity by 10.
Author
ccraigr
ID
197206
Card Set
PH105-106 mcat review
Description
Basic overview of General Physics Principles
Updated

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