Problem: The diagram shows four states of a system, each with different internal energy, E. Suppose there is another state of the system, State E, and that its energy relative to State A is E = E1 + E4. Where would State E be on the diagram?

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E = E1 + E → above state B


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Problem Details

The diagram shows four states of a system, each with different internal energy, E. State A is at the lowest internal energy (E), while State B is at the highest internal energy.  From State A, delta-E1 goes up to State C, about two-thirds of the way to State B.  From State C, delta-E2 goes up to State B. Also from State A, delta-E3 goes up to State D, about one-third of the way up to State B.  From State D, delta-E4 goes up to State B.

Suppose there is another state of the system, State E, and that its energy relative to State A is E = E1 + E4. Where would State E be on the diagram?

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