1.A 5-micron droplet of water is being carried in standard air toward a 500-micron drop of water at a relative velocity of 40m/s. Will the two drops collide? Support your answer with calculations.
2.A gas stream with a particulate loading of 20.0g/m^3 is passed through a 70%-efficient cyclone followed by a 95%-efficient ESP. Calculate the overall efficiency of the system.
3.If the barometric pressure is 1000 mbar, how much total pressure (in atm) does a 20 ft. column of water (open to the atmosphere) exert? (You may assume water density is 1g/mL)