777_Physics ProblemsTechnical Physics

777_Physics ProblemsTechnical Physics - Chapter 27 P27.43...

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Chapter 27 117 P27.43 R A == ×⋅ × = ρ π A 150 10 250 298 6 3 2 .. m m 0.200 10 m ej ∆Ω VI R = 0 500 298 149 . A V af a f (a) E V = A 149 597 V 25.0 m Vm . (b) P = afa f a f 149 0 500 74 6 V A W (c) RR TT =+ = + ×° ° = 00 3 1 298 0 400 10 320 337 α bg 1C C ΩΩ . I V R = = 149 337 0443 149 0 443 66 1 V A A W a f a f f a f . P27.44 (a) ∆∆ UqV I tV = F H G I K J F H G I K J F H G I K J =⋅ = a f a f a fa f 55 0 12 0 11 1 660 0 660 . Ah V C 1 A s J 1 V C Ws 1 J Wh kWh (b) Cost = F H G I K J = 0660 060 0 1 396¢ . $0. . kWh kWh P27.45 = IV R = = V R af a f 22 10 0 120 0833 . W *P27.46 (a) The resistance of 1 m of 12-gauge copper wire is R A d d = = × ρρ AA A 2 4 417 10 1 10 514 10 8 2 2 3 . . m m 0.205 3 m . The rate of internal energy production is
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