Calculate the difference in temperature between two sides of an iron plate 20 m m thick, when heat is conducted at the rate of `6xx10^(5)` cal/min/`m^(2)`. K for metal is 0.2 cal`s^(-1)cm^(-1).^(@)C^(-1)`

The thermal conductivity of steel is 0.026 k cal//ms K. Find the temperature diference between two sides of a steel plate 4 cm thick, when heat is transmitted through the plate at the rate of 400 k cal per minute per squar metre of steady state.

Find the temperature difference between two sides of a steel plate 4 cm thick, when heat is transmitted through the plate at the rate of 400 kcal per minute per square metre at steady rate. Thermal conductivity of steel is 0.026 kcal//m.s. k .

Water is boiled in a rectangular steel tank of thickness 2 cm by a constant temperature furnace. Due to vaporisation, water level falls at a steady rate of 1 cm in 9 minutes. Calculate the temperature of the furnace. Given K for steel 0.2 cal s^(-1) m^(-1) .^(@)C^(-1)

The difference in temperature between two sides of a glass plate 0.3 mm thick is 25^@C . If the area of one side surface is 10 m^2 , calculate the heat conducted per second through the plate. The thermal conductivity of glass is 0.84 J//s m K.

A flat bottomed metal tank of water is dragged along a horizontal floor at the rate of 20 ms^(-1) . The tank is of mass 20kg and contains 1000 kg of water and all the heat produced in the dragging is conducted to the water through the bottom plate of the tank. If the bottom plate has an effective area of conduction 1 m^2 and a thickness 5 cm and the temperature of the water in the tank remains constant at 50^(@)C , calculate the temperature of the bottom surface of the tank, given the coefficient of friction between the tank and the floor is 0.343 and K for the material of the tank is 25 cal m^(-1) s^(-1) K^(-1).

A rectangular steel tank of thickness 3 cm contains water. The water in the tank is boiled by a furnace. The level of water falls at a constant rate of 1.5 cm in 15 minutes. What will be the temperature of furnace if K for steel is 0.2 cal s^(-1) m^(-1) ""^@C^(-1) ?

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 ?

1.56 xx 10 ^(5) J of heat is conducted through a 2 m^(2) wall of 12 cm thick in one hour. Temperature difference between the two sides of the wall is 20 ^(@) C The thermal conductivity of the material of the wall is (in W m^(-1) K^(-1))