Chapter 24 32. 563 nJ/m³ Chapter 26 12. 25 Ohm - 7.00 A; 20 Ohm - 9.95 A 58. 8.60 V 84. (a) 7.10 J (b) 3.62 kW (c) 1.81 kW Fishbane Problems - Chapter 28 57. proof Halliday 2nd Ed Problems - Chapter 29 22. (a) by integration, U_C = (1/2)C(EMF)² and energy out from battery = C(EMF)² (b) by integration, heat from resistor = (1/2)C(EMF)² Chapter 29 2. (a) before - 14.4 micro Wb; after - zero (b) 0.360 mV 6. (a) 0.0302 V + (0.302 mV/s³)t³ (originally mistyped) (b) 0.113 mA (corrected 1:24 PM 7/26) 24. (a) 3.00 V (b) towards top of page (c) 0.800 N to the right (d) 6.00 W for each 27. (c) 530 microN/C (the units to this answer were originally) (d) counterclockwise (posted incorrectly) 32. (a) 950 microV (b) 109 microH 54. (a) (mu_0)i/(2pir) into page (b) L(mu_0)i(dr)/(2pir) (c) ln(b/a)L(mu_0)i/(2pi) (d) ln(b/a)L(mu_0)(di/di)/(2pi) CCW (e) 0.506 microV 76. (a) from a to b (b) (Rmg)tan(phi)/(L²B²cos(phi)) (c) (mg)tan(phi)/(LB) (d) Rm²g²tan²(phi)/(L²B²) (e) same answer as in (d) by a different method Wolfson - Chapter 30 42. (a) (mu0)J(|z|) (b) (mu0/2)Jh 48. (a) (mu0)I(sqrt(n²+(1/2piR)²)) (b) INVtan(1/2(pi)nR) 57. proof; out of the page 58. proof; out of the page 68. (a) (pi/3)R²J_0 (b) (mu0/6r)R²J_0 (c) (mu0/2)rJ_0(1-(2r/3R)) HRW PROBLEM SUPPLEMENT #1 - CHAPTER 30 73. (a) 4.8 mT (b) 0.933 mT (c) zero Fishbane Problems - Chapter 30 32. (a) Bmax = 174 microT; Bmin = 139 microT <== these answers use (b) 0.140 microWb (1 Wb = 1 T⋅m²) HRW's value of rho_CU (c) heating rate is 1.57 W; doesn't get very hot (16.9 nOhms⋅m) (a) Bmax = 175 microT; Bmin = 140 microT <== these answers use (b) 0.141 microWb (1 Wb = 1 T⋅m²) Wolfson's value (c) heating rate is 1.58 W; doesn't get very hot (16.8 nOhms⋅m) (a) Bmax = 171 microT; Bmin = 137 microT <== these answers use (b) 0.138 microWb (1 Wb = 1 T⋅m²) Y&F's value (c) heating rate is 1.54 W; doesn't get very hot (17.2 nOhms⋅m) Halliday 2nd Ed Problems - Chapter 30 9. (a) 20 min (b) 59.4 m(N⋅m) 22. (a) 3750 m/s (b) drawing 29. (a) 2.60 x 10^6 m/s (b) 0.109 microseconds (c) 141 keV (d) 70.3 kV 31. (-11.4 N/C)i - (6 N/C)j + (4.8 N/C)k Chapter 30 18. (a) 4.35 mT (b) 7.53 J/m³ (c) 1.52 microm³ (d) 11.4 microJ (e) 3.65 microH (f) same as (d) by a different method 44. (a) (23.4 V)sin((240pi rad/s)t) plus a graph (b) max EMF = 23.4 V; zero (c) max I = 124 mA; zero 50. (a) (mu_0)i/(2pir) (b) [(mu_0)i/(2pir)]l(dr) (c) [(mu_0)i(l)/(2pi)]ln(b/a) (d) proof (e) [(mu_0)i²(l)/(4pi)]ln(b/a) 58. (a) proof (b) will be posted after this problem is due 60. (a) 24.0 mV (b) 1.55 mA (c) 72.1 nJ (d) Q = 5.20 microC; U_L = 18.0 nJ 64. (a) will be posted after this problem is due (b) will be posted after this problem is due 66. (a) will be posted after this problem is due (b) will be posted after this problem is due (c) 5.63 microC; long after S is closed 68. (a) 894 microC (b) 20.0 mJ (c) graph 70. (a) i1 = 1.50 A; i2 = 1.80 A (b) 2.40 A Halliday 2nd Ed Problems - Chapter 31 5. proof 25. (a) 78.5 microT (b) 1.08 microN⋅m Chapter 31 32. (a) 945 rad/s (b) 70.6 ohms (c) resistor - 120 V; capacitor - 450 V; inductor - 450 V Wolfson - Chapter 32 9. ((mu_0)l/2pi)ln((a+w)/w) Halliday 2nd Ed Problems - Chapter 32 7. 0.452 V HRW PROBLEM SUPPLEMENT #1 - CHAPTER 32 28. (a) 1.89 pT (b) graph; at 10 cm, B = 0.565 pT 38. (a) (4/3) A (b) at R/4 and at 4R Chapter 32 14. 15.9 microJ 50. 61.4 kV/m and 205 microT Halliday 2nd Ed Problems - Chapter 33 11. (a) 238.7 W (b) 154.8 W (c) 393.5 W 12. (a) 18.7 J (b) 5.10 J (c) 13.6 J Fishbane Problems - Chapter 33 46. DiffEq is -I(t)R - L(dI/dt) = 0 HRW PROBLEM SUPPLEMENT #1 - CHAPTER 33 50. 100 V (you must carefully explain why) HRW PROBLEM SUPPLEMENT #1 - CHAPTER 34 6. 4.74 m Wolfson - Chapter 34 6. (a) 7.20 x 10^{11} (V/m)/s (b) increasing 52. 3.50 gauss G1 and G2: proofs