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That law is described, at bottom, as a statement of energy:
AConservation
BConsumption
CCompression
DConvection
Answer & Solution
Correct answer: A. Conservation
1. Heat in and work out are simply accounted for.
2. The internal energy absorbs the difference.
3. The law is a statement of energy conservation.
_Source: OpenStax University Physics Volume 2, Chapter 3, The First Law of Thermodynamics._
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