A heat flux meter attached to the inner surface of a 3 cm thick refrigerator door

indicates a heat flux of 32 W/m² through the door. The inner surface of the door is 7°C

and the outer surface is 15°C.

Determine:

a. the thermal conductivity of the door.

b. Plot what you expect the temperature profile to look like through the door in the

x-direction (label your axes)

Explain your plot