The amount of heat conducted out per second through a window, when inside temperature is `10^(@)C` and outside temperature is `-10^(@)C`, is 1000 J. Same heat will be conducted in through the window, when outside temperature is `-23^(@)C` and inside temperature is:

The temperature of a room heated by heater is 20^@C when outside temperature is -20^@C and it is 10^@C when the outside temperature is -40^@C . The temperature of the heater is

The temperature of a room heated by heater is 20^@C when outside temperature is -20^@C and it is 10^@C when the outside temperature is -40^@C . The temperature of the heater is

What is the rate of energy loss in watt per square metre through a glass window 5 mm thick if outside temperature is -20^@ C and inside temperature is 25^@ C ? ( k_("glass") = 1 W//m K )

A radiator whose temperature is T^(@)C is used to heat the room in the cold weater The radiator is able maintain a room temmperature of 30^(@)C when ouside temperature is 10^(@)C and 15^(@)C when outside temperature is 30^(@)C Determine the temperature of the radiator [Assume Newton's law of cooling to be valid] .

A black body radiates 6 J//cm^2 s when its temperature is 127 °C. How much heat will be radiated per square centimetre per second when its temperature is 527 °C?