Evaluate the radius of gyration, Rg, of
(a) A solid sphere of radius a,
(b) A long straight rod of radius a and length I. Show that in the case of a solid sphere of specific volume v" Rg/nm = 0.056902 x {(vJcm3 g-I) (M/g mol-1)} 1/3. Evaluate Rg for a species with M = 100 kg mol-1, v, = 0.750 cm3 g-l, and, in the case of the rod, of radius 0.50 nm.