A length is measured as 100.0 m with an uncertainty of ±0.5 m. What is the significant figure of the measurement?
Practice Questions
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A length is measured as 100.0 m with an uncertainty of ±0.5 m. What is the significant figure of the measurement?
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The measurement has 4 significant figures (100.0).
Questions & Step-by-step Solutions
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Q
Q: A length is measured as 100.0 m with an uncertainty of ±0.5 m. What is the significant figure of the measurement?
Solution: The measurement has 4 significant figures (100.0).
Steps: 4
Step 1: Identify the measurement given, which is 100.0 m.
Step 2: Look at the digits in the measurement. The digits are 1, 0, 0, and 0.
Step 3: Count the number of significant figures. The digit '1' is significant, the first '0' is significant because it is after a non-zero digit, the second '0' is also significant for the same reason, and the last '0' is significant because it is after a decimal point.
Step 4: Since all four digits (1, 0, 0, 0) are significant, the total count of significant figures is 4.
