Calculate the rate of loss of heat through a glass window of area `1000 cm^(2)` and thickness 0.4 cm when temperature inside is `37^(@)C` and outside is `-5^@)C` . Coefficient of thermal conductivity of glass is `2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1)`.

Calculate the rate of loss of heat through a glass window of area 1000 cm2 and thickness of 4 mm, when temperature inside is 27^@ C and outside is -5^@ C . Coefficient of thermal conductivity of glass is 0.022 cal/ s cm^@ C.

Calculate the rate of loss heat through a glass window of area 1000sq.cm. and thickness 4mm when the temperature inside is 37°C and outside is 5°C ( K for glass =0.0022)

For a glass window of area 1500 cm^2 and thickness 0.5 cm, determine the rate of loss of heat if the temperature inside the window is 35^@C and outside is -2^@C . Take, coefficient of thermal conductivity of glass = 2.2 xx 10^(-3) cal s^(-1) cm^(-1) K^(-1)

A heater of resistance 20 Omega is used to heat a room at 10^@C and is connected to 220 V mains. The temperature is uniform inside the room and heat is transmitted outside the room through a glass window of area 1.2 m^2 and thickness 0.1 cm. If T^@C is the temperature outside and thermal conductivity of glass is 0.2 cal s^(-1) m^(-1) ""^@C^(-1) , then find the value of 10T - 75 close to nearest integer.

Calculate the rate of loss from a room through a glass window of area 1.5 m^(2) and thickness 2.5 xx 10^(-3) m, when the temperature of the room is 25^(@) C and that of the air outside is 10^(@) C . Assume that the inner glass surface is at the room temperature. [ Thermal conductivity of glass =1.2 "Wm"^(-1) "K"^(-1) ]

A room at 20^@C is heated by a heater of resistence 20 ohm connected to 200 V mains. The temperature is uniform throughout the room and the heati s transmitted through a glass window of area 1m^2 and thickness 0.2 cm. Calculate the temperature outside. Thermal conductivity of glass is 0.2 cal//mC^@ s and mechanical equivalent of heat is 4.2 J//cal .

Estimate the rate at which ice would melt in a wooden box 20 mm thick and of inside measurement 200 cm x 100 cm x 100 cm assumming that external temperature is 27^(@)C and coefficient of thermal conductivity of wood is 0.0004 cal s^(-1) cm^(-1) .^(@)C^(-1) .