Solid particles of diameter 0.1 mm and density 2 g/cm3 are to be separated from air in a settling chamber. If the air flow rate is 100 ft3 /s and the maximum height of the chamber is 4 ft, what should...

Solid particles of diameter 0.1 mm and density 2 g/cm3 are to be separated from air in a settling chamber. If the air flow rate is 100 ft3 /s and the maximum height of the chamber is 4 ft, what should its minimum length and width be for all the particles to hit the bottom before exiting the chamber? (Air: ¼ 0:075 lbm/ ft3 ; ¼ 0:018 cP.)