Engineering, 11.12.2019 19:31 antcobra
Acomputer cpu chip assembly consists of 50 g silicon, 20 g copper, 50 g polyvinyl chloride (plastic). it heats from 15oc to 70oc as the computer is turned on. how much did the entropy change? csilicon = 0.7kj/kg k, ccu = 0.42kj/kg k, cpvc = 0.92kj/kg k.
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