MasteringPhysics_ Ch 01.3-1b.pdf

MasteringPhysics_ Ch 01.3-1b.pdf - MasteringPhysics Ch...

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9/29/2017 MasteringPhysics: Ch 01.3-1.6 1/2 Significant Figures Conceptual Question In the parts that follow select whether the number presented in statement A is greater than, less than, or equal to the number presented in statement B. Be sure to follow all of the rules concerning significant figures. Part A Statement A: 2.567 , to two significant figures. Statement B: 2.567 , to three significant figures. Determine the correct relationship between the statements. Hint 1. Rounding and significant figures Rounding to a different number of significant figures changes a number. For example, consider the number 3.4536. This number has five significant figures. The following table illustrates the result of rounding this number to different numbers of significant figures: Four significant figures 3.454 Three significant figures 3.45 Two significant figures 3.5 One significant figure 3 Notice that, when rounding 3.4536 to one significant figure, since 0.4536 is less than 0.5, the result is 3, even though
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