If the terminal speed of a sphere of gold (density = 19.5kg/m3) is 0.2m/s in a viscous liquid (density = 1.5kg/m3) find the terminal speed of a sphere of silver (density 10.5kg/m3) of the same size in the same liquid
(a) 0.2m/s
(b) 0.4m/s
(c) 0.133m/s
(d) 0.1m/s.