Question: An experiment is conducted to determine the drag coefficient for an air flow/sink separator used to suspend metal particles. The particles have a density of 3.1 g/cm3. The air has a density of 0.0012 g/cm3. The measured velocity is 1600 cm/s. The particles are 2.5 cm diameter spheres.
Question 1: What is the drag coefficient?
Please give me an explanation to find the drag coefficient.