A ruler can be reasonably read down to the nearest millimeter, while a Vernier caliper can be read to the nearest 0.1 millimeter.  Suppose you want to measure an object with nominal length of 2 cm with a precision as close to 1% as possible.  Which instrument can you use? (You can do a calculation to figure this out.)   a. The ruler or the caliper.   b. The ruler.   c. The caliper.   d. Neither, you would need a micrometer.

Physics for Scientists and Engineers, Technology Update (No access codes included)
9th Edition
ISBN:9781305116399
Author:Raymond A. Serway, John W. Jewett
Publisher:Raymond A. Serway, John W. Jewett
Chapter1: Physics And Measurement
Section: Chapter Questions
Problem 1.53P: A sidewalk is to be constructed around a swimming pool that measures (10.0 0.1) m by (17.0 0.1) m....
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  1. A ruler can be reasonably read down to the nearest millimeter, while a Vernier caliper can be read to the nearest 0.1 millimeter.  Suppose you want to measure an object with nominal length of 2 cm with a precision as close to 1% as possible.  Which instrument can you use? (You can do a calculation to figure this out.)

      a.

    The ruler or the caliper.

      b.

    The ruler.

      c.

    The caliper.

      d.

    Neither, you would need a micrometer. 

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