CHAPTER 1 - 1 - CHAPTER1Introduction,Measurement,Estimating...

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CHAPTER 1 - Introduction, Measurement, Estimating 1. ( a ) Assuming one significant figure, we have 10 billion yr = 10 × 10 9  yr =            1 × 10 10  yr ( b ) (1 × 10 10   yr)(3 × 10 7  s/yr) =         3 × 10 17  s . 2. ( a ) 4 significant figures . ( b ) Because the zero is not needed for placement, we have         4 significant figures . ( c ) 3 significant figures . ( d ) Because the zeros are for placement only, we have         1 significant figure . ( e ) Because the zeros are for placement only, we have         2 significant figures . ( f ) 4 significant figures . ( g ) 2, 3, or 4 significant figures , depending on the significance of the zeros. 3. ( a ) 1,156 =         1.156 × 10 3 . ( b ) 21.8 =         2.18 × 10 1 . ( c ) 0.0068 =          6.8 × 10 –3 . ( d
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This note was uploaded on 02/22/2010 for the course PHYSICS 7A/7B taught by Professor All during the Fall '08 term at University of California, Berkeley.

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CHAPTER 1 - 1 - CHAPTER1Introduction,Measurement,Estimating...

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