B= 105 , D = 15

1. a. B kg of water at 50C is poured into a bucket that contains D kg of ice at 0C. Find the equilibrium temperature (neglect the inuence of the bucket)? (40 points) b. What is the rate of heat transfer by radiation if a hot tea pot in 100 C sits outside in temperature B/S l\"C. Take the surface area of the pot as B/ 10 mg. The emissivity of pot is D/ZO in the infrared, where the radiation takes place. Stephan Boltzmann constant 5.67 X 103 W/mz-K4(35 points)