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A system gives out 30 J of heat and also...

A system gives out 30 J of heat and also does 40 J of work. What is the internal energy change?

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To solve the problem of finding the change in internal energy of a system that gives out 30 J of heat and does 40 J of work, we can follow these steps: ### Step-by-Step Solution: 1. **Identify the Given Data**: - Heat given out by the system (Q) = -30 J (negative because heat is released) - Work done by the system (W) = -40 J (negative because work is done on the surroundings) ...
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