Approximate answers and hints to even number Serway problems - Winter 1999

      Style is Chapter:Problem #

      Problem set (These solutions have been rounded to 2 decimals.  You should report to 3 decimals).

      1. 23:P10 :  Draw Free Body diagram; solve for q= 2.0 x10 -15.
      2. 23:P24:1.8x10 4i + 2.2.x10 5j or E =2.2x10 5N/C at -85.3 degree from the + x axis.
      3.  
      4. 23:P40 Lines are evenly spaced at infinity.
      5. 24:P10 S1= -Q;  a)  flux=-Q/epsilon0 b) =0 c) = -2Q/epsilon0; 24:P28 a) 0 b) =lambdaL/epsilon0 .
      6.  
      7. SAMPLE FINAL EXAM [pp 41] PROBLEMS 24-25, BUT USE *=pc given in assignment sheet.
      8. 25:P50 V = lambda(pi + ln9)
      9. 26:P8 V = 8.99×104V; 26:16 d = 12nm; 26:P22 50% longer.
      10. . 26:P30 CT = 11C/6; 26:P34 k = 2.5 × 103 N/m. ; 26:P70 Ct =kappa × epsilon0A/(fd+kappa(1-f)d).   Look at limit as f goes to 1.
      11. . 27:P4 a) 13A. b) J=6.5 × 104A/m2.
      12. . 27:P50 Mc=273 metric Ton/hr.,     27:P62 Q = 3.00 × 10-3C.
      13. . 28:P4 R = 0.25 ohm;   28:P6 Re = 25.6 ohm;     28:P20 R = 3.34 ohm.
      14. . HWS2:1 a) -1,2.5 and -1.5 A resp. b) -1.3, 3.08, -1.67 A c) 50 microC.
      15. .
      16. . 29:P38 5.9mm 29:p56 n= 4.3 × 1025m-3 , 29:P64 B= 2.0 × 10-2 T (remember to draw and use a free body diagram.)
      17. . 30:P16 a) opposite directions b) 68A.(Remember to draw and use a free body diagram.)
      18. . 30:P38 a) 7.4 × 10-6Wb. b) 2.3 × 10-6 Wb.;  30:P42 b) 0.018 mA. c)2.5 MV m/s. 30:P66 a) B=mu 0(Js=sigma  × v)/2.
      19. . 30:P88 relative permability of a ferromagnetic sample depends on applied field.
      20. . 31:P6 -4.7;
      21. . 31:P32 -14.cos(120t) mV
      22. . 32:P10 part a) a little less than .4V; b) a little less than .2V 32:P16 -0.4A/s
      23. . 32:P34, 18J, 32:P58, part a) about 135 Hz, b).12mC c)- 0.1A
      24. .  33:P14, part a) 20+ Hz b)  about 3.3A  33:P22 a little less than 500 KHz.
      25. .  33:P28 part a) 1.4 Kohm, b)  a little less than 100 mA c) a little over 50 deg.
      26. .  16:P4 part a) left b) -5
      27. .  34:P4 Take deriviatives and remember that c 2=1/(mu not × epsilson not) .   P28  part a)  a little less than 600W/m 2   part b)  2  × 1016 W  c) about  .1 GN d)  1.6   × 1021 N;