... terminal at .a 30. 8: a)H. 130. 0m)120.0(2)m1080.4()1800()500(2/252020mmπμπrANμKKLb) Without the material, H.102.60H) 130. 0(500114mmKLKL 30. 64:(a) Initially ... A0354.0360V7.1210Ri 30. 9:For a long, straight solenoid:.//and/200lANμLlNiAμiNLBB 30. 10: a) Note that points aand b are reversed from that of figure 30. 6. Thus, according to Equation 30. 8, ... obtainA.4.00s)(2.00A/s)(4.00A)0.12(s)/A00.4(iti 30. 11: a)H.0.250A/s)(0.0640/V)0160.0()/(/dtdiL b)Wb.104.50(400)/H)(0.250A)720.0(/4 NiLB 30. 12: a)J.540.02/A)(0 .300 H)0.12(2122 LIU b)W.2.16)180(A )300 .0(22...