A stainless steel plate 1.6 cm thick rests on top of a hot plate, which is maintained

Question:

A stainless steel plate 1.6 cm thick rests on top of a hot plate, which is maintained at 250°C. Air flows over the top surface of the plate to provide a convective heat-transfer coefficient of h = 50 W/m²· K. The air temperature is maintained at 20°C.
a. What is the heat flux through the stainless steel plate, in W/m²?
b. What is the temperature at the top surface, T₁, of the stainless steel plate?

c. Based on the analysis above, what can you conclude about the heat-transfer resistance offered by the hydrodynamic boundary layer? T = 20°C bulk air flow 9 loss boundary layer, h = 50 W/m²-K T, = ? stainless steel L= 1.6 cm ks = 16 W/m-K T2 = 250°C