Part (a) How much work, in joules, did the bird do on the snake? Part (b) How much work, in joules, did it do to raise its own center of mass to the branch?

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Helmholtz Free Energy

The Helmholtz free energy is a thermodynamic potential used to calculate the measure of useful work from a closed system. This system is kept at constant temperature and volume. German physicist Hermann Helmholtz introduced this concept in 1882.