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Calculate how long will it take for a particle to settle 0.5 m if the radius...

Calculate how long will it take for a particle to settle 0.5 m if the radius of the particle is 10 nm, 100 nm, 1mm, 10 mm, or 100 mm, and the density of the particle is 1030 or 2650 kg/m3. Water at 20 °C has a viscosity of 0.001002 Pa·s. You are encouraged to use Excel spreadsheet for this problem.

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