What is thermal equilibrium?

Problem Statement

What is thermal equilibrium?

Step-by-Step Explanation

Thermal equilibrium occurs when objects in contact no longer exchange net heat because they are at the same temperature.

1. Identify what the question is asking. In Thermodynamics, this usually means naming the known quantities, the unknown quantity, and the concept that connects them.
2. Write the relevant definition, rule, or relationship before substituting numbers or manipulating symbols.
3. Work one step at a time and keep units, signs, and restrictions visible.
4. Check whether the answer makes sense in the original context.

Final Answer

Thermal equilibrium occurs when objects in contact no longer exchange net heat because they are at the same temperature. The reliable strategy is to start from the definition, apply the correct rule carefully, and then interpret the result in plain language.