PH105-106 mcat review

  1. Average Velocity
    & Units
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  2. Average Acceleration
    & Units
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  3. Velocity at time t with acceleration a:
    Image Upload 3

  4. Distance at time t with acceleration a:
    Image Upload 4

  5. Find velocity at a point d with acceleration a:
    Image Upload 5
  6. distance at time t without acceleration a:
    Image Upload 6
  7. Average Velocity:
    Image Upload 7
  8. On an xy axis with a velocity with angle Image Upload 8 between velocity and the x axis, What is the X component of the velocity? What is the Y component of velocity?
    Image Upload 9

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  9. Common Trigonometric Functions:

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

    kg m/s or N s
  17. Define Impulse:
    • Image Upload 12
    • But is more useful as: Change in Momentum
    • Image Upload 13
  18. Define Work:
    What are the Units?
    • Image Upload 14 where theta is the angle between F and d
    • Its units are Joules (N m)
  19. Define Power
    What are the units?
    Image Upload 15

    It is Joules/s or Watts.
  20. Define Kinetic Energy:
    Image Upload 16

    the Joule
  21. Define PotentialG Energy
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    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 18
  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,
    • Power,
    • Energy,
    • Time,
    • Distance.
  26. Which of the following are Vectors?
    • 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.
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  32. What is Newtons 3rd Law?
    • The law of force pairs. Equal and opposite force. 
    • Image Upload 20
  33. What is the Law of gravitation?
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  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 22

    Image Upload 23
  38. Define angular velocity
    Image Upload 24
  39. Define angular acceleration:
    Image Upload 25
  40. How is linear velocity related to angular velocity?
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  41. How is linear acceleration related to rotational acceleration?
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  42. given the frequency, define angular velocity:
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  43. Define period T
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  44. What must be true or constant to correctly apply the kinematic equations?
    a or Image Upload 30 must be constant.
  45. Find angular velocity at time t with angular acceleration given.
    Image Upload 31
  46. what is the angular velocity given the number of rotations at a given angular acceleration?
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  47. find find the number of radians traversed given time and angular acceleration:
    Image Upload 33
  48. define average angular velocity:
    Image Upload 34
  49. Define torque:
    Image Upload 35
  50. What is the relation between torque and moment of inertia?
    |Image Upload 36
  51. Define rotational kinetic energy:
    Image Upload 37
  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 38
  54. Define Newton's second law in terms of angular momentum:
    Image Upload 39
  55. Define center of mass:
    • Location of balance on linear object.
    • Image Upload 40
  56. Define density:
    what are the units/
    Image Upload 41

  57. Define specific gravity:
    Image Upload 42

    no units
  58. define weight:
    Image Upload 43
  59. Is pressure scalar or a vector
  60. Define Pressure:
    What are the Units?
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  61. What is standard atmospheric Pressure?
    Image Upload 45
  62. Define gauge pressure:
    Image Upload 46
  63. Define absolute pressure:
    Image Upload 47

    • where P0 is the surface pressure.
    • Must be a static fluid.
  64. Define Buoyant Force for a given fluid:
    • Image Upload 48
    • upward only
  65. Define flow rate:
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  66. Define the flow of a fluid through varying diameters:
    Image Upload 50
  67. Define Bernoulli's Equation:
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  68. For an Enclosed Fluid, Define Pascal's principle:
    Image Upload 52
  69. How does Pascal's equation relate to work?
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  70. Define Coulomb's Law:
    What are the Units?
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  71. For Electrostatics, define the constant k:
    Image Upload 55
  72. Define Electric Field:
    Image Upload 56

    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:
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  75. Define the potential difference between two charged plates at distance d between them:
    Image Upload 58
  76. Define Voltage:
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  77. Define Electrical Potential Energy:
    Image Upload 60

    • notice that the radius is not squared!
  78. Does work done by the electrostatic force result in an increase or decrease in Potential Energy?
  79. Does work done against the electrostatic force result in an increase or decrease in Potential Energy?
  80. Define Current:
    Image Upload 61

    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 62 R=V/I
  84. Define the Power dissipated by a Resistor:
    Image Upload 63
  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 64
    • Coulombs/V.
  87. What is the mathematical principle for capacitors in parallel?
    Image Upload 65
  88. What is the mathematical principle for capacitors in series?
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  89. Define Gauss's Law:
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  90. Define the dielectric constant:
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  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 69

    • Image Upload 70
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  95. What does adding a dielectric do to the Capacitance?
    • It increases it:
    • Image Upload 72
  96. What is a dielectric?
    an insulator.
  97. Define Tesla T
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  98. Define Period T:
    T=time to complete 1 cycle
  99. Define frequency f:
    Image Upload 74
  100. What is the angular frequency?
    • It is equal to angular velocity, and given in rad.
    • Image Upload 75
  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?
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  104. What is the speed of a wave given f and wavelength?
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  105. Do electromagnetic waves need a medium?
    NO. light for example.
  106. what is the speed of light?
  107. What is the wavelength for a string attached at each end?
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  108. What is the wavelength for an open pipe?
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  109. What is the wavelength for a closed pipe?
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  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.
Card Set
PH105-106 mcat review
Basic overview of General Physics Principles