Mathematics · Transmission of Heat Calculations
A rectangular ice box of total surface area 1000 cm2 initially contains 1.5 kg of ice at 0 °C. The thickness of the box walls is 2 mm and the outside temperature is 42 °C. If the thermal conductivity of the box material is 10-2 W/(m·K) and the latent heat of fusion of ice is 3.36 × 105 J/kg, the mass of ice remaining in the box after 160 minutes is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 10.7 kg
- 20.8 kg
- 30.9 kg✓
- 40.6 kg
Correct answer
0.9 kg
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