Water at `506(@)C` is filled in a closed cylindercal vessel of height `10cm` and cross sectional area `10cm^(2)` The walls of the vessel are adiabatic but the flat parts are made of `1-mm` thick aluminium `(K=200Js^(-2)m^(-1)`^(@)C^(-1)` . Assume that the outside temperature is `20^(@)C` . The density of water is `1000kgm^(-3)` and the specify heat capacity of water `=4200Jkg^(-1)`^(@)C^(-1)` .Estimate the time taken for the temperature to fall by `1.0^(@)C` . Make any simplifying assumotion you need but speify them.

Water at 50^(@)C is filled in a closed cylindrical vessel of height 10cm and cross sectional area 10cm^(2) The walls of the vessel are adiabatic but the flat parts are made of 1-mm thick aluminium (K=200Js^(-2)m^(-1)C^(-1) . Assume that the outside temperature is 20^(@)C . The density of water is 1000kgm^(-3) and the specify heat capacity of water =4200Jkg^(-1)C^(-1) .Estimate the time taken for the temperature to fall by 1.0^(@)C . Make any simplifying assumption you need but specify them.

Water at 50^(@)C is filled in a closed cylindrical vessel of height 10cm and cross sectional area 10cm^(2) The walls of the vessel are adiabatic but the flat parts are made of 1-mm thick aluminium (K=200Js^(-2)m^(-1)C^(-1) . Assume that the outside temperature is 20^(@)C . The density of water is 1000kgm^(-3) and the specify heat capacity of water =4200Jkg^(-1)C^(-1) .Estimate the time taken for the temperature to fall by 1.0^(@)C . Make any simplifying assumption you need but specify them.

Calculate the heat energy required to raise the temperature of 2 kg of water from 10^@ C to 50^@ C. Specific heat capacity of water is 4200 J kg^(-1) K^(-1) .

Calculate the heat energy required to raise the temperature of 2 kg of water from 10^@C to 50^@C . Specific heat capacity of water is 4200 JKg^(-1) K^(-1)

200 kg of water is heated from 20^(@)C to 100^(@)C . If specifice heat of water is 4.2xx10^(3)Jkg^(-1)0C^(-1) , calculate the increase in the mass of water.

What would be the final temperature of the mixture when 1kg of ice at -10^(@)C is mixed with 4.4kg of water of 30^(@)C ? (Specific heat capacity of ice =2100Jkg^(-1)K^(-1))

2 Kg of water of 60^(@)C is mixed with 1 kg of water at 30^(@)C kept in a vessel of heat capacity "220 J K"^(-1) . The specific heat of water is "4200 J Kg"^(-1)K^(-1) . Then the final temperature is nearly.

Water is filled in a closed cylindrical vessel of 10 cm height and base radius sqrt(10//pi) cm. The open ends ofthe cylinder are closed by two metal discs made ofa material whose thickness is 10^(-3)m and having thermal conductivity 200W//m^(@)C. If water temperature inside the cylinder is 50^(@)C and surrounding temperature is 20^(@)C, findthe time taken for the temperature to fall by 1^(@)C, Given that the specific heat ofwater is 4200J//kg^(@)C. and heat loss from water only takes place by the discs as the walls are made up of a thermally insulating material.

40 g of ice at 0^(@)C is used to bring down the temperature of a certain mass of water at 60^(@)C to 10^(@)С . Find the mass of water used. [Specific heat capacity of water = 4200 Jkg^(-1)""^(@)C^(-1) ] [Specific latent heat of fusion of ice = 336xx10^(3)Jkg^(-1) ]