help please will upvote

1. (10 points) (a) Use Stokes' Law to determine the settling velocity (m/sec) of a microplastic particle with a 0.5mm diameter and a density of 1.02kg/L in 10C water (H2O=0.9997kg/L and H20=1.308 103N-sec /m2 ). (b) Is Stokes' Law appropriate for this particle settling velocity calculation