Answer to Question #51621 in Physics for john

Question #51621

A closed cubical box(60cm on edge and 3cm on thickness) contains ice at 0 oC.When the outside temperature is 30 oC,it is found that 250 grams of ice melt each hour.What is thermal conductivity of the walls of the box?(heat of fusion of ice L=333x10^3 J/kg

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