# Internal energy

Classical Mechanics Level 5

Define $$A\to B$$ as the change in internal energy from A to B.

Find the value of $$\{A\to E \}+ \{ A\to B\} - 2\{A\to C\} - 2\{C\to D\} -2\{D\to E\} - \{E\to F\} -\{F\to B\}$$

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