Ans to the even-numbered assigned problems in Ch 22--25
The following is a list of the answers to the even-numbered assigned problems.
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Chapter 22
22.12
(a) 696 
(b) 0.0431 A
(c) VR = 8.62 V, VC = 28.7 V
(d) -73.3° lags
22.26
(a) 250 rad/s
(b) 400
(c) VL = 30.0 V, VC = 30.0 V, VR = 240 V
22.36 0.124 H
22.46
(a) 568
(b) 0.866 A
(c) 226 V
Chapter 23
23.14
(a) +z
(b) +z
(c) -y
(d) -x
23.16
(a) 637 W/m2
(b) Emax = 693 V/m; Bmax = 2.31 × 10-6 T
(c) 2.12 × 10-6 J/m3
23.44
(a) 2.34
(b) 82°
23.66
(a) Emax = 1.03 × 103 N/C; Bmax = 3.43 × 10-6 T
(b) 4.0 × 1026 W
23.74 1.89
23.78 72.1°
23.84 1.28
Chapter 24
24.8
(a) 17.0 cm
(b) 74.8 cm in front of mirror; 25.5 mm tall
(c) 17.0 cm
24.14 (b) 33.0 cm to left of mirror; 1.20 cm tall; inverted; real
24.18
(a) concave
(b) f = +2.50 cm; R = +5.00 cm
24.22 8.35 cm to left of vertex; 0.325 mm tall; erect
24.28 3.30 m
24.52
(a) -48.0 cm; diverging
(b) 6.38 mm; erect
24.56
(a) diverging
(b) -10.0 cm
(c) 6.2 cm to left of lens
(d) 6.2 cm to left of lens
24.58 object: 0.300R in front of mirror; image: 0.750R behind mirror
Chapter 25
25.20
(a) farsighted
(b) converging
(c) +56.2 cm; +1.78 diopters
25.22
(a) nearsighted
(b) diverging
(c) -75.0 cm; -1.33 diopters
25.30
(a) 4.17
(b) 6.00 cm
25.34
(a) 156 mm from eyepiece; 14.4 mm
(b) 2.5 cm
(c) -120
25.40 -19.0
Lewis Ford
Physics Department
Texas A&M University
ford@physics.tamu.edu
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