The top surface of the passenger car of a train moving at a velocity of 70 km/h is 2.8 m wide and 8 m long. the top surface is absorbing solar radiation at a rate of 200 w/m2,and the temperature of the ambient air is 30°c. assuming theroof of the car to be perfectly insulated and the radiation heatexchange with the surroundings to be small relative to convection, determine the equilibrium temperature of the top surface of the car.