A wall of length 4 m,height m and thickness 4 m,has the inner wall surface at 140 oC and that the outer at 20 oIf the thermal conductivity of wall material is -85 W/mK,the temperature at 10 cm from the inner wall is: ?->(Show Answer!)

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1. A wall of length 4 m,height m and thickness 4 m,has the inner wall surface at 140 oC and that the outer at 20 oIf the thermal conductivity of wall material is -85 W/mK,the temperature at 10 cm from the inner wall is:

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