Significant digits - text-solutions

Significant digits - text-solutions - nanni (arn437)...

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Unformatted text preview: nanni (arn437) Significant digits - text CNS (87654) 1 This print-out should have 5 questions. Multiple-choice questions may continue on the next column or page find all choices before answering. 001 10.0 points The number 0.000001010 has how many sig- nificant digits? 1. 4 correct 2. 10 3. 9 4. 2 5. 3 Explanation: 0.000001010 has 4 sig figs. The zeros after the decimal are only place holders. 002 10.0 points Calculate 3217. km + 13.1 km + 1.30 km. Round off if necessary to apply the rule of sig- nificant figures for addition and subtraction of data numbers. 1. 3231.4 km 2. 3200. km 3. 3231.40 km 4. 3231. km correct 5. 3230. km Explanation: For addition and subtraction, round to the least precise decimal place. 003 10.0 points Keeping in mind the rules for rounding, sig- nificant digits, and scientific notation, what is 975 . 0321 . 0003 ? 1. 3 . 25 10 6 2. 3 10 6 correct 3. 3 . 250107 10 6 4. 3 . 3 10 6 5. 325010.7 Explanation: 975 . 0321 (7 sig figs) . 0003 (1 sig fig)...
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This note was uploaded on 09/19/2011 for the course CH 301 taught by Professor Fakhreddine/lyon during the Fall '07 term at University of Texas at Austin.

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Significant digits - text-solutions - nanni (arn437)...

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