An iron boiler is 10 mm thick and has a heating area `2m^(2)`. The two surfaces of the boiler are at `240^(@)C` and `100^(@)C` respectively. Find the mass of the water evaporated into steam per minute. Given that latest heat of steam is `536 kcal kg^(-1)` and thermal conductivity of iron is `1.6 xx 10^(-2) kcal s^(-1) m^(-1) .^(@)C^(-1)`.

An iron boiler is 1 cm thick and has a heating area 2.5 m^(2) . The two surface of the boiler are at 230^(@)C and 100^(@)C respectively. If the latent heat of the steam is 540 kcal kg^(-1) and thermal conductivity of iron is 1.6xx10^(-2)K cal s^(-1) m^(-1)K^(-1) , then how much water will be evaporated into steam per minute ?

A slab of stone of area 0.34 m ^(2) and thickness 10 cm is exposed on the lower face to steam at 100^(@)C .A block of ice at 0^(@)C rests on the upper face of the slab. In one hour, 3.6 kg of ice is melted. Assume that the heat loss from the sides is negligible. The latent heat of fusion of ice is 3.4 xx 10^(4) J kg^(-1) . What is the thermal conductivity of the stone in units of Js^(-1) m^(-1) ""^(@)C^(-1) ?

A pitcher with 1-mm thick porous walls contain 10kg of water. ,Water comes to its outer surface and evaporates at the rate of 0.1gs^(-1) . The surface area of the pitcher (one side) =200cm^(2) . The room temperature =42^(@)C , latent heat of vaporization =2.27xx10^(6)Jkg^(-1) , and the thermal conductivity of the porous walls =0.80js^(-1)m^(-1) ^(@)C^(-1) . Calculate the temperature of water in the pitcher when it attains a constant value.

Steam at 100^(@)C is passed into 20 g of water at 10^(@)C when water acquire a temperature of 80^(@)C , the mass of water present will be [Take specific heat of water = 1 cal g^(-1).^(@) C^(-1) and latent heat of steam = 540 cal g^(-1) ]

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)

1 gm of ice at 0^@C is converted to steam at 100^@C the amount of heat required will be (L_("steam") = 536 cal//g) .

A slab of stone of area of 0.36 m^(2) and thickness 0.1 m is exposed on the lower surface to steam at 100^(@)C . A block of ice at 0^(@)C rests on the upper surface of the slab. In one hour 4.8 kg of ice is melted. The thermal conductivity of slab is (Given latent heat of fusion of ice = 3.63 xx 10^(5) J kg^(-1) )