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1–1. . *1–4 Evaluate each of the following to three significant figures, and express each answer in SI units using an appropriate prefix: (a) (425 mN)2, (b) (67 300 ms)2, (c) [723(106)]1/2 mm.
SOLUTION a) (425 mN)2 = 3 425 ( 10-3 ) N 4 2 = 0.181 N2
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b) (67 300 ms)2 = 3 67.3 ( 103 )( 10-3 ) s 4 2 = 4.53 ( 103 ) s2
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c)
3 723 ( 106 ) 4 1>2 mm = 3 723 ( 106 ) 4 1>2 ( 10-3 ) m = 26.9 m
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Ans: a) 0.181 N2 b) 4.53 ( 103 ) s2 c) 26.9 m 1 www.AnswerDone.com Distribution of this document is illegal