Particle removal by settling. Water containing 50mg/L of monodisperse (uniformly sized) spherical particles of diameter 100m flows at a rate of 25m3/h into a cylindrical tank with a depth of 5m and a volume of 50m3. The density of each particle is 2.5g/cm3. The water temperature is 20C (density =1.0g/cm3, viscosity =0.01g/cms ). The only removal process that influences the particles within the tank is gravitational settling. Determine the outlet concentration (mg/L) of the particles