Computer memory chips are mounted on a finned metallic mount to protect them from overheating. A 512 MB memory chip dissipates 5 W of heat to air at 25oC. If the temperature of this chip is not exceed 60oC, the overall heat transfer coefficient – area product of the finned metal mount must be at least
(a) 0.14 W/oC
(b) 0.20 W/oC
(c) 0.32 W/oC
(d) 0.48 W/oC
(e) 0.76 W/oC
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