Using the boundary layer solution for a flat plate for laminar and turbulent flow, consider a 5 m s -1 wind flowing parallel to the surface of a pan containing water. The kinematic viscosity of air is 1.55x10 -5 m2 s -1 and the mass diffusivity of water in air at the temperature (300 K) and pressure (1 atm) of the system is 2.30x10 -5 m2 s -1