Consider the stationary flow of a viscous fluid past a sphere in the ≪ 1 limit (Stokes
' flow).
a) As argued in lecture, in the →0 limit, we expect a scaling for the pressure difference p -
= p - p[infinity]
p/₂ = (/, ) → 1/ tilde () (/)

Define your characteristic length and velocity for this problem, and compute the function tilde () from the solution obtained in lecture.