A system absorbs 50 kJ heat and does 20 kJ of work. What is the net change in the internal energy of the system ?

A system absorbs 50 kJ heat and does 20 kJ of work. What is the net ch

1.	A system absorbs 50 kJ heat and does 20 kJ of work. What is the net change in the internal energy of the system ?
Answer» INCREASE by 30 kJ Decrease by 30 kJ Increase by 70 kJ Decrease by 70 kJ Solution :`DeltaU=q+(-w)=50+(-20)=30kJ`