Question

11.7. In a certain process 400 J of heat are supplied at the sametime 150J of work a system and done by the system. What is the increase in the internal energy of the system (250j)​

Answer 1

• Initial energy=150J
• Final energy=400J

We know

$\boxed{\sf increased\:energy=Final \:energy-initial\:energy}$

$\\ \sf\longmapsto increased\:energy=400-150$

$\\ \sf\longmapsto increased\:energy=250J$