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The difference between lenghts of a cert...

The difference between lenghts of a certain brass rod and of a steel rod is claimed to be constant at all temperatures. Is this possible?

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To determine if the difference between the lengths of a brass rod and a steel rod can remain constant at all temperatures, we need to analyze the concept of linear expansion. ### Step-by-Step Solution: 1. **Understand Linear Expansion**: - When materials are heated, they expand. The change in length (ΔL) of a material due to temperature change (ΔT) can be expressed as: \[ \Delta L = L_0 \cdot \alpha \cdot \Delta T ...
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