(10) 04. See the figure below for the height-time curve for the sedimentation of a suspension in a vertical cylindrical vessel with an initial uniform solids concentration of 100 kg/m! a) What is the velocity at which the sediment/suspension Interface nises? (10) b) What is the velocity of the interface between the clear liquid and a suspension of concentration 133 kg/m? (10) c) What is the velocity at which a layer of concentration 133 kg/m propagates upwards from the base of the vessel? (10) d) At what time does the sediment/suspension interface start nising? (10) e) At what time is the concentration of the suspension in contact with the clear liquid no longer 100 kg/m? (10) Hei 100 SO 10 20 30