Exercises 1.12, page 48

  1. 1. 16 25-W lights, 15 40-W lights

  2. 3. 2.500 h

  3. 5. $29,500, $34,500

  4. 7. 3.2 million the first year, 3.7 million the second year   

  5. 9. 50 acres at $200/acre, 90 acres at $300/acre

  6. 11. 60 ppm/h

  7. 13. $85, $95

  8. 15.  − 2.3 μA ,   − 4.6 μA ,  6.9 μA

  9. 17. 6.9 km, 9.5 km

  10. 19. 240 ec, 195 ec +  ,  120 de

  11. 21. 6.5 s

  12. 23. 900 m

  13. 25. 84.2 km/h, 92.2 km/h

  14. 27. 390 s, first car

  15. 29. 64 mi from A

  16. 31. 4 L

  17. 33. 79 km/h

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