Consider a minivan the roof of which can be approximated as a flat plate, 2.1 m wide and 3.5 m long. The sun beats down on the roof such that the net solar radiation absorbed is 2800 W. If the ambient air is 25ºC, the car is moving at 90 km/h, and the inside surface of the roof is heavily insulated, determine the steady-state temperature of the roof. Ignore radiation emitted from the roof and assume that the roof temperature is uniform along the minivan.