Homework #3 Prob. 1-19 (a) 2.575Ω 800 2.575 0.8 Ω 2.06Ω (b) From table 1.2, 200 feet of 14-gauge nickel wire has resistance: 5.1 2.575Ω1000 200 5.1 2.5750.001 200 2.6265Ω (c) !""#$%&'!(#) !""#$%&'!(#) 2.06%2.6265 4.6865Ω Prob. 1-22 (a) + ,- 400sin20πt1034-%2 %5 0.16sin20πt-8 1.285,6-20πtW >> t=[0:0.0001:0.5]; >> p=1.28*(sin(20*pi*t)).^2; >> plot(t,p); >> grid; >> xlabel('t (time)'); >> ylabel('p(t) (instantaneous power)'); 0 0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.500.20.40.60.811.21.4t (time)p(t) (instantaneous power)Prob 1-27 (a) + 89:; < -+12012060 240Ω (b) + 89:;2 < 2-+2120120150 192Ω Prob 1-37 '& '& >?'&-?'&- +;-
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