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An icebox made of 1.5 cm thick styrofoam has dimensions 60 cm x 60 cm x 30 cm. It contains ice at 0C and

An icebox made of 1.5 cm thick styrofoam has dimensions 60 cm x 60 cm x 30 cm. It contains ice at 0C and is kept in a room at 40C. Find the rate at which the ice is melting. Latent heat of fusion of ice = 3.36 x 10 J kg . and thermal conductivity of styrofoam = 0.04 W mC.

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