MCAT Physics Ch. 3 Equations

8 cards   |   Total Attempts: 182
  

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Cards In This Set

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Temperature Conversions
F = 9/5C + 32K = C + 273
Thermal Expansion Equation
ΔL = αLΔT
  1. ΔL = change in length
  2. α = the coefficient of linear expansion (specific to object's material)
  3. L = original length
  4. ΔT = change in temperature
ΔL = αLΔT ΔL = change in lengthα = the coefficient of linear expansion (specific to object's material)L = original length ΔT = change in temperature
Volume Expansion Equation
ΔV = βVΔT
  1. ΔV = change in volume
  2. β = the coefficient of volumetric expansion (specific to material)
  3. V = original volume
  4. ΔT = change in temperature
First Law of Thermodynamics
ΔU = Q - W
  1. ΔU = change in system's internal energy (in Joules, J)
  2. Q = energy transferred into system as heat
  3. W = the work done by the system
Pg. 91
Heat gained or lost (during temperature change)
Q = mcΔT
  1. q = heat
  2. m= mass
  3. c = specific heat of the substance (cal/g x K)
  4. ΔT = change in temperature
Heat gained or lost (during phase change)
Q = mL
  1. q = heat
  2. m = mass
  3. L = the heat of transformation or latent heat of the substance
Entropy & heat
ΔS = Qrev/T
  1. ΔS = change in entropy (Joules/Kelvin, J/K)
  2. Qrev = heat gained or lost in a reversible process
  3. T = temperature (in Kelvin)
Second Law of Thermodynamics
ΔSuniverse = ΔSsystem + ΔSsurroundings > 0