A hollow metallic sphere of radius 20 cm surrounds a

Last updated: 6/25/2023

A hollow metallic sphere of radius 20 cm surrounds a concentric metallic sphere of radius 5 cm The space between the two spheres is filled with a nonmetallic material The inner and outer spheres are maintained at 50 C and 10 C respectively and it is found that 160 x Joule of heat passes radially from the inner sphere to the outer sphere per second Find the thermal conductivity of the material between the spheres