Hi1315
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explain the following observation referring to the appropriate process of heat transfer in each case


two cups of tea are poured at the same time . they are left for 10 minutes . one of the cups has a metal teaspoon left in it . the tea in this Cup is cooler than the tea in the other Cup at the end of the 10 minute period



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Respuesta :

Perplexed20
If the two cups are the same/equal in all regards the spoon makes the difference in heat loss. Metal spoon is a good conductor, heat conducts up the spoon handle. Radiant and convection losses occur in the surrounding air. Metal becomes a “heat sink”.

Spoon will feel warmer to the touch than a pottery or foam cup that is not a good conductor.

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