The amount of heat energy radiated per second by a surface depends upon .

A full radiator at 0^(@)C radiates energy at the rate of 3.2 xx 10^(4) erg cm^(-2) s^(-1) . Find (i) Stefan's constant and (ii) the amount of heat radiated per second by a sphere of radius 4 cm and at a temperature of 1000^(@)C .

Assume that the total surface area of a human body is 1.6m^(2) and that it radiates like an ideal radiator. Calculate the amount of energy radiates per second by the body if the body temperature is 37^(@)C . Stefan constant sigma is 6.0xx10^(-8)Wm^(-2)K^(-4) .

Assume that the total surface area of a human body is 1-6m^(2) and that it radiates like an ideal radiator. Calculate the amount of energy radiates per second by the body if the body temperature is 37^(@)C . Stefan contant sigma is 6.0xx10^(-s)Wm^(-2)K^(-4) .

Assume that the total surface area of a human body is 1.6m^(2) and that it radiates like an ideal radiator. Calculate the amount of energy radiates per second by the body if the body temperature is 37^(@)C . Stefan constant sigma is 6.0xx10^(-8)Wm^(-2)K^(-4) .

The amount of energy radiated by a body depends upon

The amount of heat enerrgy radiated per unit time per unit area by a body depends upon

The total amount of heat evolved or absorbed in a reaction depends upon the number of steps in which the reaction takes place.