An asbestos pad is square in cross section, measuring5 cm on a side at its small end increasing linearly to 10 cm on aside at the large end. The pad is 15 cm high. If the small end isheld at 600 K and the large end at 300 K, what heat-flow ratewill be obtained if the four sides are insulated? Assume onedimensionalheat conduction. The thermal conductivity ofasbestos may be taken as 0:173 W/mK:
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