# Pdf 3140 first we solve for q using x1 q k c x1 17w

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Unformatted text preview: r 19.pdf (31/40) First, we solve for q using x1. q k C x1 (1.7W / m K ) (20 C ( 20 C )) 0.002m 34000W / m 2 Then, use the flux to solve for how far into the glass ( x 2 ) the temperture will be 15 C. x x 2013-02-27 10:38:19 C k (20 C 15 C ) 1.7W / m k q 34000W / m 2 0.25mm or a) 32/40 Chapter 19.pdf (32/40) 2013-02-27 10:38:19 33/40 Chapter 19.pdf (33/40) The thermal expansion coefficient can be calculated from the following equation provided that T is known : (1) l T l0 To find T, use the data given on resistivity : ( 2) 2013-02-27 10:38:19 0 aT 34/40 Chapter 19.pdf (34/40) Solve for T, then plug equation 2 into equation 1. Solve for . T -0 a l 0 l0T la l0 ( 0) 0.4cm (0.02 10 8 .m) 10cm (15.3 10 8 .m 1.30 10 8 .m) 5.7 10 5 / K or d) 2013-02-27 10:38:19 35/40 Chapter 19.pdf (35/40) 2013-02-27 10:38:19 36/40 Chapter 19.pdf (36/40) 2013-02-27 10:38:20 37/40 Chapter 19.pdf (37/40) 2013-02-27 10:38:20 38/40 Chapter 19.pdf (38/40) 2013-02-27 10:38:20 39/40 Chapter 19.pdf (39/40) Inter atomic distance increases with rising temperature. 2013-02-27 10:38:21 40/40 Chapter 19.pdf (40/40)...
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## This note was uploaded on 03/24/2013 for the course ENGINEER 101 taught by Professor Preston during the Winter '13 term at McMaster University.

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