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SPECIMEN VII

Reaching equilibrium

Set each object, then let them touch. Watch heat flow until the temperatures meet.

OBJECT A 80° °C OBJECT B 20° °C HEAT

Object A Object B equilibrium
100 50 0 Teq 0s time 3.2s
Equilibrium temp 50°C
Heat transferred Q 60

Q = c ΔT. Here c is the heat capacity: the heat an object holds per degree. One side loses exactly what the other gains.

Raise one object's heat capacity and the meeting point moves toward it.