An ice-box is built of wood 1.75 cm thick, lined with cork
3 cm thick. If in the steady state the temperature of the
inner surface of the cork is 0 ºC and that of the outer
surface of wood is 12 ºC, what is the temperature of the
wood-cork interface? The thermal conductivities of wood and
cork are 0.2 W/m-K and 0.04 W/m-K respectively
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