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The diagram shows two aluminium cans, one painted white and the other painted black, which are otherwise identical - Junior Cycle Science - Question g - 2014
Question g
The diagram shows two aluminium cans, one painted white and the other painted black, which are otherwise identical. Each can contains 100 cm³ of water at 60 °C. In... show full transcript
Worked Solution & Example Answer:The diagram shows two aluminium cans, one painted white and the other painted black, which are otherwise identical - Junior Cycle Science - Question g - 2014
Step 2
Explanation
Answer
The black surface radiates heat better than the white surface. As a result, the can that is painted black will lose heat more quickly, causing the water inside to cool down faster. Conversely, the white can reflects more heat, allowing the water to retain its warmth for a longer period. Hence, the water in the white can will remain warmer for a longer time.