One end of a brass bar is maintained at 296°C, while the other end is kept at a constant however lower temperature. The cross-sectional area of the bar is4.00 10-4 m2. Because of insulation, there is negligible heat loss during the sides of the bar. Heat flows during the bar, however, at the rate of 3.0 J/s. What is the temperature of the bar at a point0.20 m from the hot end?