A student wants to design coasters that can prevent hot drinks from damaging a table due to transferring heat to the table. The student makes a circular coaster by cutting out a piece of cardboard 1 mm thick and placing a glass with hot water on top of it. After a while, the student observes that the table surface just below the coaster becomes warm. The image shows the setup for testing the coaster.
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A student wants to design coasters that can prevent hot drinks from damaging a table due to transfer...
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