A 6-mm-thick stainless steel strip (k = 21 W/m K, = 8000 kg/m 3 ,

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A 6-mm-thick stainless steel strip (k = 21 W/m · K, ρ = 8000 kg/m3, and cp = 570 J/kg · K) exiting an oven at a temperature of 500°C is allowed to cool within a buffer zone distance of 5 m. To prevent thermal burn to workers who are handling the strip at the end of the buffer zone, the surface temperature of the strip should be cooled to 45°C. If the air temperature in the buffer zone is 15°C and the convection heat transfer coefficient is 120 W/m2·K, determine the maximum speed of the stainless steel strip.

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