a. In an experiment to find the heating rate for a tank of concentrated sugar juice, the temperature at the beginning of the experiment was 20C, and the time required to raise the temperature to 80C equals 30 minutes. If the volume of concentrated sugar juice in the tank is 50 feet and the specific heat of the concentrated sugar juice is 0.8 (Wh b / lb.F), calculate the heating rate in SI units (joules, seconds^-1).