A circular heater plate with 80-mm diameter is placed in a tank containing liquid nitrogen at 1-MPa pressure and 80 K temperature. The upward facing side of the plate is maintained at 100 K. Find the...

A circular heater plate with 80-mm diameter is placed in a tank containing liquid nitrogen at 1-MPa pressure and 80 K temperature. The upward facing side of the plate is maintained at 100 K. Find the heat transfer rate between the heater and liquid nitrogen. For liquid nitrogen properties, you may assume that