Thermal equilibrium indicator – Rankers Physics

Thermodynamics: Practice Problem & Solution

The physical quantity that determines whether or not the given system A is in thermal equilibrium with another system B is called
Work
Heat
Pressure
Temperature

Solution Explained:

To solve this problem, we apply the core principles of Thermodynamics. Understanding the underlying formula is key to arriving at the correct answer below:

Temperature is the physical quantity that determines thermal equilibrium. Two systems are in thermal equilibrium if and only if they are at the same temperature.

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