A cubical block of mass `1.0kg` and edge `5.0cm` is heated to `227^(@)C` . It is kept in an evacuated chamber maintained at `27^(@)C` . Assming that the block emits radiation like a blackbody, find the rate at which the temperature of the block will decreases. Specific heat capacity of the material of the block is `400Jkg^(-1)K^(-1)` .

A cube of mass 1 kg and volume 125cm^2 is placed in an evacuated chamber at 27^@C . Initially temperature of block is 227^@C . Assume block behaves like a block body, find the rate of cooling of block if specific heat of the material of block is 400 J//kg-K .

A cube of mass 1 kg and volume 125cm^2 is placed in an evacuated chamber at 27^@C . Initially temperature of block is 227^@C . Assume block behaves like a block body, find the rate of cooling of block if specific heat of the material of block is 400 J//kg-K .

Find thermal capacity for a copper block of mass 0.2 kg, if specific heat capacity of copper is 290 J//kg ^@C

Find thermal capacity for a copper block of mass 0.2 kg, if specific heat capacity of copper is 290 J/kg ""^(@)C .

A hammer of mass 200 kg strikes a steel block of mass 200 g with a velocity 8 ms^(-1) . If 23% of the energy is utilized to heat the steel block, the rise in temperature of the block is (Specific heat capacity of steel, = 460 J kg ^(-1) K^(-2) )

A solid maintained at t_(1)^(0) is kept in an evacuated chamber at temperature t_(2) ""^(0)C (t_(2) gt gt t_(1)) .Rate of heat absorbed by the body

A lead block of mass 2 kg is supplied with a heat energy of 3600 J. Calculate the rise in temperature, if the sp. heat capacity of lead is 130 J kg^(-1) C^(-1) .

A metal block of density 6000 kg m^(-3) and mass 1.2 kg is suspended through a spring of spring constant 200Nm^(-1) .The spring - block system is dipped in water kept in a vessel .The water has a mass of 250g and the block is at a height 40cm above the bottom of the vessel .If the support to the spring is broken , what will be the rise in the temperature of the water specific heat capacity of the block is 250J kg^(-1)K^(-1) and that of water is 4200J kg^(-1)K^(-1) .Heat capacities of the vessel and the spring are negligible .