What thermodynamic law explains why human core body temperature remains constant when rate of metabolic heat production equals rate of heat loss?
Answer and explanation
Correct answer: B. First Law of Thermodynamics (Conservation of Energy)
- Step 1: Internal thermal energy U is governed by energy conservation: Delta U = Heat produced - Heat dissipated. Step 2. When production rate equals dissipation rate, Delta U = 0, maintaining a steady core temperature of 37 deg C. Answer: First Law of Thermodynamics (Conservation of Energy). Why not the others: Zeroth law defines temperature and thermal equilibrium; Second law governs entropy and heat flow direction; Third law deals with absolute zero.
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