Answer
a. 2 significant digits.
b. 1 significant digit.
c. 5 significant digits.
Work Step by Step
To find the number of significant digits in each measurement, we follow the rules on page 162 of the book and we get the following:
a. the measurement 110 cm has 2 significant digits by rule #1: all non-zero digits are significant. Thus "1,1" are significant.
b. the measurement 6000 mi has 1 significant digit by rule #1: all non-zero digits are significant. Thus "6" is significant.
c. the measurement 24.005 s has 5 significant digits by rule #1: all non-zero digits are significant. Thus "2,4,5" are significant and by rule #2: all zeros between significant digits are significant; that is, we have here 2 zeros which are significant.
