`1.56 × 10^5 J` of heat is conducted through is `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 `Wm ^(-1) K^(-1)`)

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))

1.56xx10^(5) heat energy is transferred through wall 2 m^(2) and 12 cm thickness in every hour. Temperature difference between two walls is 20^(@)C , the mall conductivity of material of wall is . . . .. . "Wm"^(-1)K^(-1)

If temperature difference on the two sides of a wall increases from 10^@C to 20^@ C , its thermal conductivity

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity

If the temperature difference on the two sides of a wall increases from 100^@C to 200^@C , its thermal conductivity

Calculate the quantity of heat conducted through 2m^(2) of a brick wall 12cm thick in 1 hour if the temperature on one side is 8^(@)C and on the other side is 28^(@)C . (Thermal conductivity of brick =0.13Wm^(-1)K^(-1) )

An iron boiler with walls 1.25 cm thick contains water at atmospheric pressure. The heated surface is 2.5 m^(2) in area and the temperature of the underside is 120^(@)C. Thermal conductivity of iron is 20 cal s^(-1) m^(-1) K^(-1) and the latent heat of evaporation of water 536 xx10^(3) cal kg^(-1) . Find the mass of water evaporated per hour.

The area of a glass window is 1.2 m^(2) . The thickness of the glass is 2.2 mm. If the temperature outside is 36°C and the temperature inside is 26°, calculate the heat flowing into the room every hour. Thermal conductivity of glass is 0.8 Wm^(-1) K^(-1) .