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Homework Statement
While studying thermodynamics, I constructed the following problem, which I can't seem to solve.
Suppose that [itex]Q_{4} > Q_{3} [/itex] and [itex] |Q_{3}| > |Q_{4}| [/itex]. Then for what values of ΔU is it necessarily the case that [itex]|ΔU-Q_{4}| > |ΔU-Q_{3}|[/itex]
Homework Equations
The Attempt at a Solution
I really have no idea what to do; I solved a much simpler textbook style problem and then decided to consider a more general version of the problem, which led me to this. Any ideas? I conjecture that both the Q values are negative, but is this true? How would I prove it?
BiP