Consider a sphere ball that is made of a hypothetical metal. The diameter of the sphere ball is 0.5 m. The properties of the sphere ball k = 1 W/m-K, Q = 1 X 10-6 m2/s. The sphere ball is initially at a uniform temperature of 10 °C and is dropped into water at 90 °C. The convective heat transfer coefficient is h = 100 W/m2K. Determine the temperature at r = ro/4 from the center of the sphere ball 20 minutes after the sphere ball is dropped into the water using the one-term approximation method. Please elaborate your answer. Your answer must include Biot number, constants such as A1, explanation on your solving process, and the estimation for the temperature value. Grading rubric: accurate estimation of Biot number (15 points), accurate estimation of constants such as A1 (15 points), accurate use of equations and accurate estimate for the temperature (20 points). Note: You are not allowed upload any file. HTML Editor is disabled.