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AP Physics 2/Unit 9 – Thermodynamics
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Entropy Change in Thermal Equilibrium

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Two systems with heat capacities C₁ = 500 J/K and C₂ = 1500 J/K are initially at 90°C and 30°C, respectively. They are placed in thermal contact and reach equilibrium. The resulting total entropy increase is what fraction of the maximum possible entropy increase for the quantity of heat exchanged?

A

0.5

B

0.75

C

0.25

D

1.0

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