You pour coffee into an unlidded cup, intending todrink it 5 minutes later. You can add cream when you pourthe cup or right before you drink it. (The cream is at thesame temperature either way. Assume that the cream andcoffee come into thermal equilibrium with each other veryquickly.) Which way will give you hotter coffee? Whatfeature of this question is different from the previous one?

University Physics Volume 2
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ISBN:9781938168161
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Chapter1: Temperature And Heat
Section: Chapter Questions
Problem 40CQ: You pour coffee into an unlidded cup, intending to drink it 5 minutes later. You can add cream when...
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You pour coffee into an unlidded cup, intending to
drink it 5 minutes later. You can add cream when you pour
the cup or right before you drink it. (The cream is at the
same temperature either way. Assume that the cream and
coffee come into thermal equilibrium with each other very
quickly.) Which way will give you hotter coffee? What
feature of this question is different from the previous one?

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