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Unformatted text preview: ) ( x e dx d at 5 . 1 = x before two significant digits can be considered to be at least correct in your answer, the step size would be (you cannot use the exact value to determine the answer) (A) 0.05/2 (B) 0.05/4 (C) 0.05/8 (D) 0.05/16 6. The heat transfer rate q over a surface is given by dy dT kA q − = where k = thermal conductivity ⋅ ⋅ K m s J A = surface area ( ) 2 m T = temperature ( ) K y = distance normal to the surface ( ) m Given K m s J 025 . ⋅ ⋅ = k 2 m 3 = A the temperature T over the surface varies as 500 1076 2200 1493 2 3 + − + − = y y y T The heat transfer rate q at the surface most nearly is (A)-1076 W (B) 37.5 W (C) 80.7 W (D) 500 W For a complete solution, refer to the links at the end of the book....
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- Spring '08
- Calculus, Continuous function, step size, heat transfer rate