# Shared Flashcard Set

## Details

thermodynamics
n/a
52
Physics
04/13/2011

Term
 heat for phase change
Definition
 Q = mcDT
Term
 Heat for solid to liquid
Definition
 Q = mLf
Term
 Heat for liquid to gas
Definition
 Q = mLv
Term
 Conservation of heat
Definition
 Qlost = Qgained
Term
 Kinetic Energy
Definition
 KE = 1/2mv2
Term
 Potential Energy
Definition
 PE = mgh
Term
 Calorie to Joule conversion
Definition
 1 calorie = 4.19 joules
Term
 Boyle's Law
Definition
 P1V1 = P2V2
Term
 Charle's Law
Definition
 V1T2 = V2T1
Term
 Guy-Lusaac Law
Definition
 P1T2 = P2T1
Term
 Combined Law
Definition
 P1V1T2 = P2V2T1
Term
 Ideal Gas Law
Definition
 PV = nRT
Term
 Average Kinetic Energy
Definition
 KEave = 3/2kBT
Term
 Velocity Root Mean Square
Definition
 Vrms = √3RT/M or Vrms = √3kBT/m
Term
 Work
Definition
 W = PDV or W = FDd
Term
 First law of thermodynamics (book convention)
Definition
 DU = Q - W   Q(+) Energy added Q(-) Energy removed W(+) Work done by system W(-) Work done on system
Term
 First law of thermodynamics (review convention)
Definition
 ΔU = Q + W  Q(+) Energy added Q(-) Energy removed
Term
 First law of thermodynamics
Definition
 DU = Q - W   T ↑     Q+ Enters system     W+ Done on system T↓      Q- Leaves system      W- Done by system
Term
 Isovolumetric
Definition
 no work done DV = 0 so PDV = 0 so W = 0 DU = Q   Q+ energy added   Q- energy removed
Term
 Isothermal
Definition
 No temperature change and no internal energy change   DT = 0 so DU = 0    Q = W DU = Q - W = 0
Term
Definition
 No energy transfer by heat Q = 0 so ΔU = -- W Work - increases ΔU Work + decreases Δ
Term
 Efficiency of a heat engine
Definition
 e = W/Q = 1 - Q2/Q1 = 1 - T2/T1
Term
 Entropy
Definition
 ΔS = ΔQ/T
Term
 Stress
Definition
 Force/Area Strain = Δl/l
Term
 Hooke's Law
Definition
 Y = stress/strain = Fl/ΔlA = Young's Modulus
Term
 Thermal expansion of liquids
Definition
 Δl = αlΔT
Term
 Thermal expansion of solids
Definition
 ΔV = βVΔT
Term
 Specific Heat
Definition
 Symbol - c   Unit - Joules/(gram·degree Celcius) (J/g°C) - calories/(gram·degree Celcius) (cal/g°C)
Term
 Latent Heat
Definition
 L   Joules/grams (J/g) calories/grams (cal/g)
Term
 Energy
Definition
 E   Joules (J) calories (cal)
Term
 Heat
Definition
 Q   Joules (J) calories (cal)
Term
 Pressure
Definition
 P   atmospheres (atm or mmHg or Pa)
Term
 Volume
Definition
 V   Liters (L)
Term
 Temperature
Definition
 T   degree Celcius (°C) Kelvins (K)
Term
 moles
Definition
 n   moles (mol)
Term
 Gas Law Constant
Definition
 R   62.4 LmmHg/molK 0.0821 Latm/molK
Term
 Efficiency
Definition
 e   percentage (%)
Term
 Work
Definition
 W   Joules (J) calories (cal)
Term
 Internal Energy
Definition
 U   Joules (J) calories (cal)
Term
 Specific Heat (SU)
Definition
 c Joules/(grams•degree Celcius) J/g°C calories/(grams•degree Celcius) cal/g°C
Term
 Latent Heat (SU)
Definition
 L Joules/grams or calories/grams J/g or cal/g
Term
 Energy (SU)
Definition
 E Joules or calories J or cal
Term
 Heat (SU)
Definition
 Q Joules or calories J or cal
Term
 Pressure (SU)
Definition
 P atmospheres atm or mmHg or pa
Term
 Volume (SU)
Definition
 V Liters L
Term
 Temperature (SU)
Definition
 T degree Celcius or Kelvins °C or K
Term
 moles (SU)
Definition
 n moles mol
Term
 Gas law constant (SU)
Definition
 R 62.4 LmmHg/moleK 0.082 Latm/moleK
Term
 efficiency (SU)
Definition
 e percentage
Term
 Work (SU)
Definition
 W Joules or calories J or cal
Term
 Internal Energy (SU)
Definition
 U Joules or calories J or cal
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