An isolated system in which no heat transfer occurs is called an adiabatic system.
ΔU=q-ΔW
In this case, q=0 and the equation becomes ΔU=-ΔW since there is no heat exchange.
Therefore, ΔU=-ve is the appropriate choice.
An isolated system in which no heat transfer occurs is called an adiabatic system.
ΔU=q-ΔW
In this case, q=0 and the equation becomes ΔU=-ΔW since there is no heat exchange.
Therefore, ΔU=-ve is the appropriate choice.