problem17_p112

University Physics with Modern Physics with Mastering Physics (11th Edition)

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17.112: Denote the quantites for copper, brass and steel by 1, 2 and 3, respectively, and denote the temperature at the junction by . 0 T a) , 3 2 1 H H H + = and using Eq. ( 29 21 . 17 and dividing by the common area, ( 29 . C 100 0 3 3 0 2 2 0 1 1 T L k T L k T L k + = - ° Solving for 0 T gives ( 29 ( 29 ( 29 ( 29 ( 29 . C 100 3 3 2 2 1 1 1 1 0 ° + + = L k L k L k L k T Substitution of numerical values gives C. 4 . 78 0 °
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Unformatted text preview: = T b) Using T H L kA = for each rod, with C 4 . 78 , C 6 . 21 3 2 1 = = = T T T gives . W 30 . 3 and W 50 . 9 W, 8 . 12 3 2 1 = = = H H H If higher precision is kept, 1 H is seen to be the sum of . and 3 2 H H...
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This document was uploaded on 02/05/2008.

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