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19 September, 09:19

Imagine a corner engine has a hot reservoir of 680k

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  1. 19 September, 09:31
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    put in into kelvin

    680+273.15=953.15

    220+273.15=493.15

    953.15-493.15/953.15.

    I got 48% not sure where the rest of these come from.
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