Question

The thickness of ice layer on the surface of a lake is 5 cm. Temperature of environment is -10 °C. Find the time required for the thickness of the ice layer to become double. Thermal conductivity of ice is 0.004 cal/cm °C, density of ice is 0.92 g/cm³ and latent heat of fusion is 80 cal/gm. [Hint: ⫠xdx = x²/2]

Answer 1

Answer:

my answer is time = 19.17 hours