Physics GRE equations

  1. Power (dot product)
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  2. Coefficient of static friction; angle
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  3. Lagrangian (equation of motion)
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  4. Force; potential energy
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  5. Hamiltonian (equations of motion)
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  6. Center of mass integral
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  7. Moment of inertia integral
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  8. Torque (cross product)
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  9. Power (rotation, dot product)
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  10. Angular momentum (cross product)
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  11. Newton II (rotational)
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  12. Pendulum (period, simple)
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  13. Pendulum (period, simple, moment of inertia)
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  14. Kepler III
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  15. Pressure vs depth
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  16. Buoyant force
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  17. Equation of continuity
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  18. Bernoulli
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  19. Wave speed in a string (tension, density)
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  20. Wavenumber
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  21. Wave equation
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  22. Power delivered by oscillation
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  23. Speed of sound
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  24. Decibels
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  25. Hamiltonian (given Lagrangian)
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  26. Gauss law electricity
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  27. Gauss law magnetism
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  28. Faraday law induction
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  29. Ampere-Maxwell law
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  30. Divergence theorem
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  31. Stokes theorem
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  32. E field from potentials
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  33. B field from potentials
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  34. Poynting vector
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  35. Intensity of EM radiation
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  36. Radiation pressure
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  37. EM wave relates E,B
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  38. Lorentz force
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  39. Lorentz force (current wire)
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  40. Auxiliary D, H fields
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  41. Electric polarization
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  42. Magnetization
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  43. Dielectric constant (rel. permittivity)
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  44. Relative permeability
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  45. Defn of diamagnetism
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  46. Defn of paramagnetism
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  47. Defn of ferromagnetism
    Like paramagnetism,but more extreme and with domains
  48. Electric dipole moment
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  49. Potential energy of E dipole
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  50. Torque on magnetic dipole
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  51. Potential energy on B dipole
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  52. B field inside long solenoid
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  53. E field inside conductor
    0
  54. Direction of E field outside conductor
    Normal to surface
  55. Potentials of conductor
    Surface is equipotential
  56. Define n-type semiconductor
    Doped with atoms carrying excess electrons (e.g. nitrogen-group atoms like P or As)
  57. Define p-type semiconductor
    Doped with atoms carrying fewer electrons (results in holes) (e.g. Al-group atoms like gallium)
  58. E field at interface (boundary cond)
    • Image Upload 54 
    • Image Upload 55
  59. B field at interface (boundary cond)
    Image Upload 56 (parallel components discontinuous)
  60. What happens when EM wave hits conductor?
    E field changes phase by 180 deg, B field doesn't change phase.
  61. Ohm's law (the better variant)
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  62. Defn of current density
    Image Upload 58 = Image Upload 59
  63. Resistance from resistivity
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  64. Resistors (series, parallel)
    Additive, reciprocal of sum of reciprocals
  65. Capacitors (series, parallel)
    Reciprocal of sum of reciprocals, additive (opp. resistors)
  66. Def capacitance
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  67. Capacitor energy
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  68. RC circuit time constant
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  69. Definition of inductance
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  70. Solenoid inductance
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  71. Faraday's law for inductor (emf)
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  72. Energy of inductor
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  73. LC circuit frequency
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  74. RLC circuit (damped frequency)
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  75. Reactance (capacitive)
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  76. Voltage/current lag in AC circuit with capacitor
    Voltage lags current by 90 deg
  77. Inductive reactance
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  78. Voltage/current lag in AC circuit with inductor
    Current lags voltage by 90 deg
  79. Impedance
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  80. "Ohm's law" in AC circuits
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  81. Joule heating losses
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  82. Voltage transformer (in/out)
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  83. Current transformer (in/out)
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  84. Equipartition theorem
    Each degree of freedom contributes 0.5*k*T
  85. rms speed of ideal gas
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  86. most probable speed of ideal gas
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  87. avg speed of ideal gas
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  88. Order of v(rms), v(avg), and v(mp) in ideal gas
    v (rms) > v(avg) > v(mp)
  89. Mean free path (cross section)
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  90. Internal energy of ideal gas
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  91. Relate const. pressure & const. vol heat capacity
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  92. Adiabatic process
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  93. Adiabatic constant of monatomic gas
    5/3
  94. Partition function
    Image Upload 84 (g is degeneracy)
  95. Average energy given partition function
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  96. Relate probability to partition function
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  97. Fermi-Dirac distribution
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  98. Bose-Einstein distribution
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  99. Entropy (microstates)
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  100. Entropy (heat)
    Image Upload 90 (law 3 fixes S(0) = 0)
  101. Entropy (partition function)
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  102. Define temperature in terms of entropy
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  103. Const pressure heat capacity Maxwell relation
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  104. Const vol heat capacity Maxwell relation
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  105. Dulong-Petit model
    • Heat-capacity for solid @ high T
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  106. Debye model of heat capacity
    Image Upload 96 as T->0
  107. Clockwise process in PV diagram
    Does work on surroundings
  108. Counterclockwise process in PV diagram
    Work done on surroundings
  109. Carnot engine
    • 1. Isotherm expn
    • 2. Adiabat expn
    • 3. Isotherm comp
    • 4. Adiabat comp
  110. Thermodynamic efficiency
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  111. Helmholtz F.E.
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  112. Enthalpy
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  113. Gibbs F.E.
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  114. Partition function & Helmholtz
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  115. Chem potential and Helmholtz F.E.
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  116. Blackbody power
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  117. Wien's law
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  118. Planck distribution
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  119. Speed of EM wave (electromag constants)
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  120. Phase velocity
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  121. Group velocity
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  122. Index of refraction
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  123. Object distance / image distance for plane mirror
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  124. Magnification of spherical mirror
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  125. Magnification of image
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  126. Diffraction limit
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Author
broach13
ID
306332
Card Set
Physics GRE equations
Description
Some relevant equations for the physics GRE
Updated