Consider a hot automotive engine block; the dimensions can be approximated as $0\mathrm{.}5$ m high, $0\mathrm{.}4$ m wide, and $0\mathrm{.}8$ m long rectangular block. The bottom surface of the block is at a temperature of $100C$ and has an emissivity of $0\mathrm{.}95.$ The ambient air is at $20C,$ and the road surface is at $25C.$ Determine the rate of heat transfer from the bottom surface of the engine block by convection if the car is travelling at a rate of $80k\frac{m}{h}.$ Due to the complex geometry the flow can be assumed turbulent if it is in the transitional region.