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to Checkpoints and Odd-Numbered Questions and Problems

chapter 1

P

1. (a) 160 rods; (b) 40 chains

3. (a) 109 μm; (b) 10−4; (c) 9.1 × 105 μm

5. (a) 4.00 × 104 km; (b) 5.10 × 108 km2; (c) 1.08 × 1012 km3

7. 1.9 × 1022 cm3

9. 1.1 × 103 acrefeet

11. 1.21 × 1012 μs

13. C, D, A, B, E; the important criterion is the consistency of the daily variation, not its magnitude

15. (a) 1.43; (b) 0.864

17. (a) 495 s; (b) 141 s; (c) 198 s; (d) −245 s

19. (a) 1 × 103 kg; (b) 158 kg/s

21. 9.0 × 1049 atoms

23. (a) 1.18 × 10−29 m3; (b) 0.282 nm

25. (a) 22 pecks; (b) 5.5 Imperial bushels; (c) 200 L

27. ≈ 1 × 1036

29. (a) 18.8 gallons; (b) 22.5 gallons

31. (a) 14.5 roods; (b) 1.47 × 104 m2

33. 0.260 kg

35. (a) 11.3 m2/L; (b) 1.13 × 104 m−1; (c) 2.17 × 10−3 gal/ft2; (d) number of gallons to cover a square foot

37. 0.3 cord

39. (a) 3.9 m, 4.8 m; (b) 3.9 × 103 mm, 4.8 × 103 mm; (c) 2.2 m3, 4.2 m3

41. (a) 293 U.S. bushels; (b) 3.81 × 103 U.S. bushels

43. 2 × 104 to 4 × 104 dbugs

45. (a) 3 nebuchadnezzars, 1 methuselah; (b) 0.37 standard bottle; (c) 0.26 L

47. 0.12 AU/min

49. 6.0 × 1026 atoms

51. 3.8 mg/s

53. 1.2 m

55. 10.7 habaneros

57. (a) 4.9 × 10−6 pc; (b) 1.6 × 10−5 ly

59. (a) 400; (b) 6.4 × 107

chapter 2

CP

1. b and c

2. zero (zero displacement for entire trip)

3. (check the derivative dx/dt) (a) 1 and 4; (b) 2 and 3

4. (see Tactic 5) (a) plus; (b) minus; (c) minus; (d) plus

5. 1 and 4 (a = d2x/dt2) must be a constant)

6. (a) plus (upward displacement on y axis); (b) minus (downward displacement ...

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