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A cooler is a closed container in the shape of a cube, each side 0.5 m...

A cooler is a closed container in the shape of a cube, each side 0.5 m in length, and made of polystyrene foam with a thermal conductivity k = 0.010 W /m K. The foam is 5 millimeters thick on all sides. The cooler contains 40 kg of ice and the inside temperature is a constant 0◦C. If the temperature outside the cooler is a constant 25◦C, calculate the power P and the total energy Q conducted through the cooler in 6 hours. Calculate what amount of the ice has melted to water after 6 hours. Lfusion = 3.34×10^5 J/kg for ice/water.

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