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 - Page 17: 2


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.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.