Answers to those Homework Problems that you must write up and turn in at recitation (i.e. the HW problems not on the Mastering Physics web site) will be posted here. E1. proof P25. For both components, the magnitude turns out to be k(lambda)/R H1. (a) 693 kg/s (b) 693 kg/s (c) 347 kg/s (d) 347 kg/s (e) 575 kg/s F38. (a) 3.51 MN/C down (b) 0.79 MN/C down (c) 0.79 MN/C up (d) top plate: top, -7 microC/m² bottom, +31 microC/m² bottom plate: top, -31 microC/m² bottom, -7 microC/m² E2. proof W58. (a) 2.88x10^5 V (b) 0.107 microC from the 1st sphere to the 2nd P66. (a) 200 kV/m (b) 200 kV/m (c) 1.77 microC/m² (d) 4.60 microC/m² (e) -2.83 microC/m² P10. (a) (1/3)AJ_0 (b) (2/3)AJ_0 (you must explain why) W72. proof Suggested exercise from "Magnetic Field from Current Segments" Part D. -(mu_0/(4*pi))*I*dl*z_1/(x_1^2+z_1^2)^1.5 W68. (a) (pi/3)R²J_0 (b) (mu0/6r)R²J_0 (c) (mu0/2)rJ_0(1-(2r/3R)) W48. (a) (mu0)I(sqrt(n²+(1/2piR)²)) (b) INVtan(1/2(pi)nR) F32. (a) Bmax = 175 microT; Bmin = 140 microT <== these answers use (b) 0.141 microWb (1 Wb = 1 T⋅m²) Wolfson's value of rho_Cu (c) heating rate is 1.58 W; doesn't get very hot (16.8 nOhms⋅m) P20. pi²a²Bf W6. (a) 7.20 x 10^{11} (V/m)/s (b) this answer will be posted after this problem has been turned in P28. (a) 1.89 pT (b) graph; at 10 cm, B = 0.565 pT G3. proof G4. proof