Answer: thermal conductivity.
- A thermal conductivity
- B the specific heat
- C the latent heat
- D the emissivity
Correct answer: A. thermal conductivity
Explanation: k is the thermal conductivity of the material of the rod.
During a phase change (melting or boiling), temperature stays constant while heat is absorbed entirely as latent heat (Q=mL); temperature only rises again once the substance is fully in its new phase.
Concept context
Temperature scales, thermal expansion, calorimetry, and the three modes of heat transfer including radiation laws.