A tank of water has been outdoors in cold weather, and a slab of ice 5.7 cm thick has formed on its surface (see the figure). The air above the ice is at -12°C. Calculate the rate of formation of ice (in centimeters per hour) on the ice slab. Take the thermal conductivity of ice to be 0.0040 cal/s-cm-Co, its density to be 0.92 g/cm3, and its latent heat of fusion to be 333 kJ/kg. Assume no energy transfer through the tank walls or bottom. Air Ice Water

A cubical concrete shelter 2 m on a side has its interior kept at 22 °C on a winter night when the outside temperature is -8 °C. If the walls are 15 cm thick and the thermal conductivity of concrete is 0.84 J s-1 m-1 °C- what is the heat flow rate through one such 1 wall?

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Solid honorite has a melting temperature of 261.05 K, and a heat capacity of 450.6 J/kgK. When it is liquid, its heat capacity is 568.6 J/kgK. The latent heat for the transition from solid to liquid is 15100 J/kg. Liquid odium has a freezing temperature of 331.96 K and a heat capacity of 439.8 J/kgK. When solid, its heat capacity is 343.8 J/kgK. The latent heat for the transition from solid to liquid is 11000 J/kg. A 4.42 kg block of honorite at 261.05 K is immersed in 14.17 kg of liquid odium at 390.01 K and left to achieve thermal equilibrium in an isolated, insulated container. How much energy was gained by the odium during this process? (A positive value means energy was added. A negative value means energy was lost.)