Physics for Scientists and Engineers: A Strategic Approach with Modern Physics (3rd Edition)

Published by Pearson
ISBN 10: 0321740904
ISBN 13: 978-0-32174-090-8

Chapter 1 - Concepts of Motion - Conceptual Questions: 2

Answer

a) two b) three c) four d) three

Work Step by Step

a) Zeros trailing a non-zero number are insignificant, and the number of significant digits after the decimal is zero. So there are 2 sig figs in 310. b) Use the concepts above and the fact that zeros preceding the non-zero number after the decimal point are insignificant for a number having zero before the decimal point. So, 0.00310 has three sig figs. c) Zeros preceding the non-zero number after the decimal point are significant for a number having a non-zero digit before the decimal point. Thus 1.031 has 4 sig figs. d) Using the concepts above, 3.10*10^5 has 3 sig figs.
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