What size of particle diameter could a hurricane force wind

Question

The kinetic energy per unit volume (J/m3) of an air jet at a surface,Er, may be written as:

E_r = (ρv²/2)kd^-13

Where:

r = density of air (1.3 kg/m3),
v = air velocity
k = proportionality constant (0.4 mm1.3)
d = distance from the jet nozzle (10 mm).

For a sphere adhered to a flat surface (A₁₁ = 1x10^-19 J), plz., find:

(1) What size of particle (diameter) could a hurricane force wind (v = 15 m/s) remove from a surface?

(2) What size of particle can be removed at v = 340 m/s (speed of sound)?

(3) What air velocity would be required to remove a 1 mm particle and a 100 nm particle?