Answer
This is because of evaporative cooling.
Work Step by Step
The isopropyl alcohol on your skin evaporates because it absorbs energy from its surroundings – i.e., from your body. This effect cools you off.
University Physics with Modern Physics (14th Edition)
by Young, Hugh D.; Freedman, Roger A.
Published by
Pearson
ISBN 10:
0321973615
ISBN 13:
978-0-32197-361-0
Chapter 17 - Temperature and Heat - Problems - Discussion Questions - Page 574: Q17.18
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