Under the IUPAC sign convention, work done on a system is taken as:
ANegative if adiabatic
BZero in all cases
CAlways negative
DAlways positive
Answer & Solution
Correct answer: D. Always positive
Work done on the system raises its internal energy, so IUPAC gives it a positive sign.
Related questions
Stirring a liquid in contact with a reservoir cannot be exactly reversed because that woulIn the Carnot cycle, the heat absorbed during isothermal expansion equals which quantity?In the isothermal compression of a Carnot cycle, heat is?A Carnot cycle is made of which combination of steps?An engine absorbs 600 J per cycle and has an efficiency of 0.25. How much work does it do A Carnot engine works between 500 K and 300 K. What fraction of the absorbed heat becomes A Carnot engine takes heat from a 800 K source and rejects it at 400 K. What is its efficiIrreversibility comes from non-equilibrium states and which other cause?