Physics: Principles with Applications (7th Edition)

Published by Pearson
ISBN 10: 0-32162-592-7
ISBN 13: 978-0-32162-592-2

Chapter 1 - Introduction, Measurement, Estimating - Questions: 2

Answer

The distance in miles is given to one significant figure, while the distance in km is reported with five significant figures.

Work Step by Step

The kilometer figure claims too much accuracy. A correct sign could say “7.0 mi (11 km)”, or even “7 mi (11 km),” because each value would have about the same percentage uncertainty.
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