Thickness of ice on a lake is 5 cm and the temperature of air is `-20^(@)C` . If the rate of cooling of water inside the lake be 20000 cal `min^(-1)` through each square metre surface , find K for ice .

Thick ness of ice on a lake is 5 cm. and the temperature of air is -20^(@)C. If the rate of cooling of water inside the lake be 20000 cal mi n^(-1) through each square metre surface, find K for ice.

The thickness of ice on a Jake is 6 cm and the temperature of air is - 10^(@) C . At what rate is the thickness of ice increasing ? Thermal conductivity of ice = 2 "Wm"^(-1) "K"^(-1) . Density of ice = 920 "kg m"^(3) , specific latent heat of ice = 336 "KJ kg"^(-1)

The thickness of ice in a lake is 10 cm and its temperature is -10^(0)C . The thermal conductivity of ice = 0.004 cal cm^(-1)" sec"^(-1)""^(0)C^(-1) . Density of ice = 0.92 g/cc, latent heat of ice = 80 cal/g. The time taken for thickness of ice to be doubled is

Calculate the rate of increment of the thickness of ice layer on a lake when thickness of ice is 10 cm and the air temperature is -5^(@) C . If thermal conductivity of ice is 0.008 cal "cm"^(-1) "s"^(-1)°"C"^(-1) , density of ice is 0.91 xx 10^(3) "kg m"^(-3) and latent heat is 79.8 cal "gm"^(-1) . How long will it take the layer to become 10.1 cm ?

Surface of the lake is at 2^(@)C and depth of the lake is 20m find the temperature of the bottom of the lake

If the depth of a lake is 10 m, and the temperature of surroundings is -10^@C and that of water at the bottom of the lake is 5^@C . The thermal conductivity of the Ice and water are K_f and K_w respectively. The depth of ice will be

Bottom of a lake is at 0^(@)C and atmospheric temperature is -20^(@)C . If 1 cm ice is formed on the surface in 24 h, then time taken to form next 1 cm of ice is

Bottom of a lake is at 0^(@)C and atmospheric temperature is -20^(@)C . If 1 cm ice is formed on the surface in 24 h, then time taken to form next 1 cm of ice is