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)`

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) ?

A rectangular steel tank of thickness 2.5 cm is used to boil water by a constant temperature furnace. If the level of water inside the tank falls at a steady rate of 0.25 cm in 2 minutes due to vaporisation, find the temperature of the furnace. Take, conductivity of steel = 0.2 cal s^(-1) m^(-1) ""^@C^(-1) Latent heat of steam = 540 cal/g

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)

Steam at 100^(@)C is passed into a copper cylinder 10 mm thick and of 200 cm^(2) area. Water at 100^(@)C collects at the rate of 150 g min^(-1) . Find the temperature of the outer surface, if the conductivity of copper is 0.8 cal s^(-1) cm^(-1) .^(@)C^(-1) and the latent heat of steam is 540 cal g^(-1) .

A uniform steel rod of length 50 cm is insulated on its sides. There is a layer of water of thick ness 0.2 mm at each end of the rod. If the ends of the rod are exposed to ice at 0^(@)C , and steam at 100^(@)C, calculate the temperature gradient in the rod. Thermal conductivities of steel and water are 0.11calcm^(-1)s^(-1) ""^(@)C^(-1) and 1.5xx10^(-3)calcm^(-1)s^(-1) ""^(@)C^(-1)

One end of a brass rod 2m long and having 1cm radius is maintained at 250^(@)C . When a steady state is reached , the rate of heat flow acrss any cross-section is 0.5 cal s^(-1) . What is the temperature of the other end K=0.26"cal" s^(-1) cm^(-1). ^(@)C^(-1) .

A platinum balls of mas 100g is remoived from a furnace and immersed in a copper vessel of mass 100g containing water of mass 390g at 30^(@)C . The temperature of water rises to 40^(@)C . Caltulate the temperature of the furnace. (Given that the specific heat of platinum =168kg^(-1)K^(-1) , specific heat capacity of copper =420Jkg^(-1)K^(-1) and specific heat capacity of water =4200Jkg^(-1)K^(-1))

The height of Niagra falls is 50 m. Calculate the difference in temperature of water at the top and at the bottom of fall, if J = 4.2 J cal^(-1) .

What is the temperature of the steel-copper junction in the steady state system show in Fig. 7(e).17 ? Length of steel rod = 15.0 cm, length of the copper rod = 10.0 cm, temperature of the furnace =300^(@)C , temperature of other end 0^(@)C . The are of cross-section of the steel rod is twice that of the copper rod. (Thermal conductivity of steel =50.2 js^(-1) m^(-1) K^(-1) and of copper =3895 js^(-1) m^(-1) K^(-1) ).