The spherical grit particles, having a radius of 0.01mm and specific gravity of 3.0, need to beseparated in a settling chamber. It is given that 
∙  
∙ the density of the liquid in the settling chamber = 
∙ the kinematic viscosity of the liquid in the settling chamber  
Assuming laminar conditions, the settling velocity (in mm/s, up to one decimal place) is_____