The roof of a car in a parking lot absorbs solar radiation at a rate of 800 w/m2 . the convection coefficient between the roof and the ambient air is 12 w/m2 /k, and the ambient air temperature is 20oc. you may assume that the underside of the car roof is perfectly insulated. a. find the steady-state temperature of the roof neglecting radiation exchange with the surroundings. b. recalculate the steady-state temperature of the roof if the ambient air conditions are identical but now its surface emissivity is 0.8 and you must consider radiation exchange. hint: you can take the sky as surroundings with a temperature of 0ok.