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Assume that theres no heat exchange with the

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Unformatted text preview: While it is impossible to take heat q from a reservoir, convert it all into work, and return into the original state, it is possible to design a cyclic heat engine that takes some heat q1 from a warmer reservoir (T1), gives heat to a colder reservoir (T2), and produces mechanical work that is less than q1. The famous Carnot machine is an idealized heat engine that has the maximum possible efficiency (given T1 and T2). Toward the end of this course, we will discuss how biological molecular machines work and will find that their efficiency can actually be close to one. More examples of the 2nd law: Irreversible vs reversible expansi...
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