Answers to Even Numbered Problems

Chapter 20

P10. 7.6 T west

P12. (b) 350 A, (c) 5.22 N

P36. 91.9 A

Chapter 21

P4. from right to left

P8. specify directions

P10. (a) 0.17 V

P24. 86 V

P36. (b) 3.3 A, (c) 0.33 A, (d) 3.6 ohms

Chapter 22

P20. 14 s sooner

P38. 5.56 m, 0.372 m

Chapter 23

P2. 5.9 x 10-6 m

P12. 2.09 cm behind the surface

P16. (a) -7 cm, (b) 1.0 mm

P28. 11.56

P42. 70.7 cm

P50. converging lens, +39.8 cm, real

P64. real 21.3 cm beyond second lens, -0.708

Chapter 24

P20. 2.4 m

P40. 169 nm

P58. 45 degrees

Chapter 25

P14. (b) 22 cm

Chapter 26

P24. 9 x 1013 J, 9.3 x 1010 kg

Chapter 27

P12. 1.77 eV < E < 3.10 eV

P26. 1.52 MeV

P36. 3.2 x 10-32 m

P42. 1840

Chapter 30

P4. 5.3 %

P28. 6.12 MeV, 0.27 MeV

P30. 5.41 MeV

P36. 4.91 x 10-18 s-1

P44. (a) 3.8 x 1016 nuclei, (b) 2.5 x 1015

Chapter 31

P8. (b) 19.85 MeV


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