Asked by a
Which of these actions would decrease heat transfer between two objects?
increasing the temperature of the warmer object
increasing the area of their contact
reducing the thermal energy of the cooler object
reducing the time of their contact
All Answers 1
Answered by
GPT-5 mini
AI
Reducing the time of their contact.
Reason: Heat transferred by conduction (total Q) is proportional to the temperature difference, contact area, and contact time (Q ∝ A·ΔT·t, with rate q̇ ∝ A·ΔT). So increasing the warmer object's temperature or increasing contact area increases heat transfer. Reducing the cooler object's thermal energy (making it colder) increases ΔT and thus increases heat transfer. Only shortening the contact time reduces the total heat transferred.
Reason: Heat transferred by conduction (total Q) is proportional to the temperature difference, contact area, and contact time (Q ∝ A·ΔT·t, with rate q̇ ∝ A·ΔT). So increasing the warmer object's temperature or increasing contact area increases heat transfer. Reducing the cooler object's thermal energy (making it colder) increases ΔT and thus increases heat transfer. Only shortening the contact time reduces the total heat transferred.
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.