Compute the terminal settling velocity of a spherical particle with a diameter of 120 μm in air. Discuss the flow regime of the particle and whether Stoke’s law (velocity) can be used without a...

Compute the terminal settling velocity of a spherical particle with a diameter of 120 μm in air. Discuss the flow regime of the particle and whether Stoke’s law (velocity) can be used without a deviation.
g = 9.81 m/s2
ρpart = 1900 kg/m3
ρair = 1.20 kg/m3
μ = 1.8 x 10-5 kg/m.s