Q3 (15p) A schematic of thermal boundary layer development on an isothermal flat plate with a constant free stream flow velocity (u) is shown below. The plate is made of pure iron and the flow is laminar. All parameters shown in the schematic are known. Assume also that all fluid properties are given. Please give/derive equation for calculations of: a) Local Reynolds Number (Rex); b) Local Nusselt Number (Nux); c) Prandtl number (Pr)?; d) Please give your opinion whether any of Rex, Nux and Pr at the same -x- location may change by only changing plate material as pure copper (instead of pure iron). T T Free stream -8,(x) Thermal boundary layer T