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898_Physics ProblemsTechnical Physics

898_Physics ProblemsTechnical Physics - 238 Faradays Law...

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238 Faraday’s Law ANSWERS TO EVEN PROBLEMS P31.2 0 800 . mA P31.40 (a) 1 60 . V ; (b) 0; (c) no change; (d) and (e) see the solution P31.4 (a) see the solution; (b) 3 79 . mV; (c) 28 0 . mV P31.42 both are correct; see the solution P31.6 78 5 . s µ P31.44 4 39 1 76 10 11 . ± . ± i j e j m s 2 P31.8 (a) µ π 0 2 2 2 n r R I t counterclockwise; P31.46 7 22 2 523 . cos mV s a f b g π t (b) µ π 0 2 2 2 1 4 n r r R I t ; (c) upward P31.48 (a) 43 8 . A; (b) 38 3 . W P31.50 (a) 3 50 . A up in 2 and 1 40 . A up in 5 ; P31.10 14 2 120 . cos mV t a f (b) 34 3 . W ; (c) 4 29 . N P31.12 61 8 . mV P31.52 see the solution P31.14 (a) see the solution; (b) 625 m/s P31.54 (a) π ω ρ B R b max 2 4 2 16 ; (b) 4 times larger; P31.16 see the solution (c) 4 times larger; (d) 16 times larger P31.18 13 3 . mA counterclockwise in the lower loop and clockwise in the upper loop. P31.56 (a) see the solution; (b) 0 250 . T P31.58 see the solution P31.20 1 00 . m s P31.60 (a) C a K π 2 ; (b) the upper plate; P31.22 (a) 500 mA; (b) 2 00
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