1. Consider a heat exchanger made of sheets of parallel flat
plates. Water at 25 C, 1 atm, and 4 m/s flows over a plate. Find the water flow
rate in the boundary layer of one plate at 10 cm from the leading edge.
2. Air is flowing at 1atm, 130 C, and 20 m/s over a flat
plate. Find the thickness of the boundary layer at 5 cm from the leading edge
and the air flow rate in the boundary layer at this location.