5-5. A spherical reactor core is 5 ft in diameter. It contains 20 percent enriched U02 spherical fuel pellets l in. in diameter each. In one of these pellets, the temperature drop from center to edge of fuel is 3000F. The maximum flux in the core is 10\". What is the radial position' of this pellet? Neglect extrapolation lengths. Take kf = 1.1 Btu/hr ft 0F, fuel density = 11 gm/ cm3, E}: 500 b