Practice question · Numerical answer
A system absorbs 150 J of heat and has 60 J of work done on it. Compute the change in internal energy, in joules.
Hints
- Both heat absorbed and work done on the system are positive.
- Compute 150 + 60.
Show the answer
210
Why
J. Both terms are positive because both represent energy entering the system across the boundary.
Practise The First Law of Thermodynamics
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