University Physics with Modern Physics (14th Edition)

Published by Pearson
ISBN 10: 0321973615
ISBN 13: 978-0-32197-361-0

Chapter 1 - Units, Physical Quantities, and Vectors - Problems - Discussion Questions - Page 27: Q1.22

Answer

Operation E is not legitimate.

Work Step by Step

The dot product and vector product must take place between vectors. The result of a dot product is not a vector, so operation E is not legitimate. The result of a vector product or a vector subtraction is another vector, so all of the other examples are just fine.
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