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A glass of cold lassi placed on a kitchen counter eventually warms to room temperature. The second law of thermodynamics says:
AThe lassi could spontaneously cool further at any time
BHeat naturally flows from the warm room to the cold lassi
CHeat flows from cold lassi to warmer room without any work
DThe lassi can never reach room temperature without help
Answer & Solution
Correct answer: B. Heat naturally flows from the warm room to the cold lassi
By the second law, heat naturally flows from hot (room) to cold (lassi) until equilibrium.
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