College Physics (4th Edition)

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

Chapter 9 - Conceptual Questions - Page 359: 11

Answer

Warming up the engine can help us to complete the oil change more quickly as the oil will flow at a faster rate.

Work Step by Step

We can think of viscosity as the resistance of a fluid to flow. A fluid with a high viscosity will not flow easily, while a fluid with a low viscosity will flow more easily. Increasing the temperature of a fluid lowers a fluid's viscosity. If we warm up the engine, the oil's viscosity will decrease, which allows the oil to flow more easily. Warming up the engine can help us to complete the oil change more quickly as the oil will flow at a faster rate.
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