Which of the following statements correctly states the Zeroth Law of Thermodynamics?
PHYSICS · Single correct · AP · Physics 2: Algebra-based · Thermodynamics · Thermodynamics
Problem
Which of the following statements correctly states the Zeroth Law of Thermodynamics?
(a) If two systems have the same internal energy, they are in thermal equilibrium with each other.
(b) If two systems are each in thermal equilibrium with a third system, they are in thermal equilibrium with each other.
(c) The entropy of an isolated system never decreases over time.
(d) If two systems exchange no heat with each other, they must be at the same temperature.