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How cool is your cup of tea? - David Weston
Some holiday Physics fun. Problem: Two mugs of tea are poured from a boiling urn. One of them contains milk, and the other has the milk added after 5 minutes. Which one ends up cooler after 20 minutes? Let’s make some basic (and slightly dodgy) assumptions. Let’s state that the milk reduces the temperature of … Continue reading "How cool is your cup of tea?"