Electrical Energy and Capacitance s2
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MR. SURRETTE VAN NUYS HIGH SCHOOL
CHAPTER 1: MEASUREMENT AND THE SCIENTIFIC METHOD WORKSHEET SOLUTIONS
1. 0.00000937 1A. 9.37 x 10-6
2. 237.7 x 103 2A. 2.377 x 105
3. 479 x 10-5 3A. 4.79 x 10-3
4. 0.00754 x 106 4A. 7.54 x 103
5. 2.654 5A. 2.65
6. 0.0347 6A. 3.47 x 10-2
7. 49.371 7A. 4.94 x 101
8. 1.485 8A. 1.49
9. How many significant figures in 5037? 9A. 4
10. 0.00057 has how many significant figures? 10A. 2
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11. 0.01003 has how many significant figures? 11A. 4
12. 10 pennies has how many significant figures? 12A. Unlimited
13. 19.667 – (5.4 x 0.916) 13A. (1) 19.667 – (5.4 x 0.916) (2) 19.667 – (4.9464) (3) 14.7206 (4) 14.7
14. 4.89 + 2.745 14A. (1) 4.89 + 2.745 (2) 7.635 (3) 7.64
15. 103.37 g / 20.5 mL 15A. (1) 103.37 g / 20.5 mL (2) 5.042439024 g /mL (3) 5.04 g / mL
16. 35.45 mL – 30.5 mL 16A. (1) 35.45 mL – 30.5 mL (2) 4.95 mL (3) 5.0 mL
17. Convert 6.87 fm to Tm. 17A. 6.87 fm x 1 m x 1 Tm 1015 fm 1012 m
= 6.87 x 10-27 Tm
18. Convert 1.25 ft to m. 18A. 1.25 ft x 12 in x 2.54 cm x 1 m = 0.381 m 1 ft 1 in 100 cm
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19. Convert 0.000347 mm into nm. 19A. 3.47 x 10-4 mm x 1 m x 10 9 nm = 347 nm 103 mm 1 m
20. Convert 0.0000347 mm into inches. 20A. 3.47 x 10-4 mm x 1 m x 100 cm x 1 in 103 mm 1 m 2.54cm = 1.37 x 10-5 in
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CHAPTER 1: MEASUREMENT AND THE SCIENTIFIC METHOD QUIZ SOLUTIONS
Questions 1 - 4. How many significant figures do the following numbers have?
1. 380000000.0 1A. 9
2. 3.080 2A. 4
3. 12 inches in a foot 3A. unlimited
4. 0.00806 4A. 3
Questions 5 - 8. Write the following numbers in correct scientific notation with three sig. figs.:
5. 6.999919 x 10-4 5A. 7.00 x 10-4
6. 76000000 6A. 7.60 x 107
7. 0.0000456710 7A. 4.57 x 10-5
8. 3075.935 x 10-3 8A. 3.08
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Questions 9 - 13. Express your final answer to these problems with correct sig. figs., and in scientific notation.
9. 2.398291 g + 69.045 g + 33.4 g 9A. (1) 2.398291 g + 69.045 g + 33.4 g (2) 104.843291 g (3) 104.8 g (4) 1.048 x 102 g
10. (1.89 x 10-2) (2.0 x 104) ------5.206 x 106 10A. (1) (1.89 x 10-2)(2.0 x 104) / (5.206 x 106) (2) 7.260852862 x 10-5 (3) 7.3 x 10-5
11. 52 ------8841.040 11A. (1) 52 / 8841.040 (2) 5.881661 x 10-3 (3) 5.9 x 10-3
12. (2.0 x 10-5 m)(108 m) ------(4.84 x 107 m)(10-4 sec) 12A. (1) (2.0 x 10-5 m)(108 m) / (4.84 x 107 m)(10-4 sec) (2) 0.4132231405 m/s (3) 4.132231405 x 10-1 m/s (4) 4.1 x 10-1 m/s
13. 1 ------294.672 mL – 120.4 mL 13A. (1) 1 / (294.672 mL – 120.4 mL) (2) 0.0057381564 / mL (3) 5.7381564 x 10-3 / mL (4) 6 x 10-3 / mL
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Questions 14 - 16. Indicate the numerical value, in scientific notation, for the following prefixes of the metric system.
14. centi 14A. 10-2
15. milli 15A. 10-3
16. femto 16A. 10-15
Questions 17 - 20. Convert the following numbers into meters. Express your answer in scientific notation.
17. 4.01 nm 17A. 4.01 x 10-9 m
18. 3.79 cm 18A. 3.79 x 10-2 m
19. 2.8 Gm 19A. 2.8 x 109 m
20. 8.971 m 20A. 8.971 x 10-6 m
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