Question: Block (15 x 60 x 40 cm) is heated from the bottom with an unknown heat flux. If the temperature on the surface is observed

Block (15 x 60 x 40 cm) is heated from the bottom with an unknown heat flux. If the temperature on the surface is observed to be 60 degrees Celsius, and the room (ambient) temperature is 19 degrees C, estimate the heat flux on the bottom using free convection analysis and include radiation assuming an emissivity of 0.12.

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