solution with two constants of integration. use bessel's equation

(20 points) We are quenching 0.1 m diameter brass spheres from 350C to 80 C in a water bath. The water bath is maintained at 25C with a heat transfer coefficient of 50 W/m C. Determine: Property Conductivity (W/m K) Density (kg/m) Heat capacity (kJ/kg K) Brass 110 8500 0.40 a. The time required for the center of the sphere to reach 80 C. b. The heat transferred to the water bath for each sphere