If refrigerator 's door is kept open , will the room become cool or hot ? Explain.

A refrigerator with its power on is kept in a closed room and its door is kept open, the temperature of the room

If the door of a refrigerator is kept open, then which of the following is true

A hot body kept in a surrounding medium becomes cold if

A refrigerator door is 150 cm high, 80 cm wide and 6 cm thick. If the coefficient of conductiviy is 0.0005 (cal)/(cm s^@C) and the inner and outer surfaces are at O^@C and 30^@C respectively, then what is the heat loss (in calories) per minute through the door?

Doors of a dam are 20 m below the surface of water in the dam. If one door is opened, what will be the speed of the water that flows out of the door?( g=9.8m//s^2 )

On opening the door of a refrigerator in a room

A pan filled with hot food cools from 94^@C to 86^@C in 2 minutes. When the room temperature is 20^@C . How long will it take to cool from 74^@C to 66^@C ?

The door of a refrigerator is 150 cm. high, 80 cm wide and 6 cm thick. If the coefficient of thermal conductivity is 5 xx 10^-4 cal//cm . s. ^@C and the inner and outer surfaces are at 0^@C and 30^@C respectively. Calculate heat loss through the door in 1 minute.

A hot liquid is kept in a big room. The logarithm of the numerical value of the temperature difference between the liquid and the room is plotted against time.The plot will be very nearly