A‘thermacole’ icebox is a cheap and efficient method forstoring small quantities of cooked food in summer in particular. Acubical icebox of side 30 cm has a thickness of 5.0 cm. If 4.0 kg ofice is put in the box, estimate the amount of ice remaining after 6h. The outside temperature is 45 °C, and co-efficient of thermalconductivity of thermacole is 0.01 J s–1m–1K–1.[Heat of fusion of water = 335 × 103J kg–1]

A‘thermacole’ icebox is a cheap and efficient method forstoring sm

1.	A‘thermacole’ icebox is a cheap and efficient method forstoring small quantities of cooked food in summer in particular. Acubical icebox of side 30 cm has a thickness of 5.0 cm. If 4.0 kg ofice is put in the box, estimate the amount of ice remaining after 6h. The outside temperature is 45 °C, and co-efficient of thermalconductivity of thermacole is 0.01 J s–1m–1K–1.[Heat of fusion of water = 335 × 103J kg–1]
Answer» A ‘thermacole’ icebox is a cheap and efficient method for storing small quantities of cooked food in summer in particular. A cubical icebox of side 30 cm has a thickness of 5.0 cm. If 4.0 kg of ice is put in the box, estimate the amount of ice remaining after 6 h. The outside temperature is 45 °C, and co-efficient of thermal conductivity of thermacole is 0.01 J s^–1 m^–1 K^–1. [Heat of fusion of water = 335 × 10³ J kg^–1]