an inventor claims to have an engine that will extract heat from seawater and co

Question

an inventor claims to have an engine that will extract heat from seawater and convert it entirely to useful work. He also says this will lower the temperature of the earth as the engine comes into common use, and thus combat Global Warming. Why are the claims impossible? 1. Both claims conflict with the 2nd Law of Thermodynamics 2. The claims are not impossible according to any known law of physics 3. The claim about converting heat entirely into work is nonsense, but it is true that removing heat from the ocean would cool the earth 4. The engine could possibly convert heat to work, but this would not result in the net cooling of the earth

Explanation / Answer

1) Both claims conflict with 2nd Law of Thermodynamics

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