01_InstSolManual_PDF_Part1

# 01_InstSolManual_PDF_Part1 - MODELS MEASUREMENTS AND...

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Unformatted text preview: MODELS, MEASUREMENTS, AND VECTORS 1 11. B 12. B 13. D Answers to Multiple-Choice Problems 1. B 2. A 3. C 4. A 5. B 6. A 7. B 8. D 9. C 10. C Solutions to Problems 1.1. Set Up: We know the following equalities: 1 mg 5 1023 g; 1 mg 5 1026 g; 1 kilohms 5 1000 ohms; and 1 milliamp 5 1023 amp. Solve: In each case multiply the quantity to be converted by unity, expressed in different units. Construct an expression for unity so that the units to be changed cancel and we are left with the new desired units. 1023 g 5 2.40 g / day (a) 1 2400 mg / day 2 1 mg 1026 g 5 1.20 3 1024 g / day (b) 1 120 mg / day 2 1 mg 1023 g 5 0.500 g / day (c) 1 500 mg / day 2 1 mg 1 kilohm 5 1.50 kilohms (d) 1 1500 ohms 2 103 ohms 1 milliamp 5 20 milliamps (e) 1 0.020 amp 2 5 1023 amp Reﬂect: In each case, the number representing the quantity is larger when expressed in the smaller unit. For example, it takes more milligrams to express a mass than to express the mass in grams. 1 1 1 1 1 2 2 2 2 2 1.2. Set Up: From the meaning of the metric preﬁxes we know: 1 megaohm 5 1 MV 5 106 ohms; 1 picofarad 5 1 pf 5 10212 farad; 1 gigameter 5 1 Gm 5 109 m; 1 nanometer 5 1 nm 5 1029 m; and 1 femtometer 5 1 fm 5 10215 m. 106 ohms Solve: (a) 1 7.85 megohms 2 5 7.85 3 106 ohms 1 megaohm 10212 farad 5 5 3 10212 picofarad (b) 1 5 picofarads 2 1 picofarad 1 gigameter 5 0.300 gigameter / s (c) 1 3.00 3 108 m / s 2 109 m 1029 meter 1029 meter 5 4.00 3 1027 meter; 1 700 nm 2 5 7.00 3 1027 meter (d) 1 400 nm 2 1 nm 1 nm 10215 meter 5 2 3 10215 meter (e) 1 2 femtometer 2 1 femtometer 1 1 1 1 1 2 2 2 2 2 1 2 1-1 ...
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## This note was uploaded on 03/06/2009 for the course PHYS 114 taught by Professor Shoberg during the Spring '07 term at Pittsburg State Uiversity.

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