College Physics (4th Edition)

Published by McGraw-Hill Education
ISBN 10: 0073512141
ISBN 13: 978-0-07351-214-3

Chapter 14 - Conceptual Questions - Page 532: 17


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Work Step by Step

She should wait. The room temp milk will lower the temp of the coffee immediately. Then, waiting to drink the coffee will further lower the temp. If she waits to add the milk right before drinking the reduction in temp is only due to the milk, rather than the milk and the time lapse.
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