A system has 600 j of heat and does 300 j of work. What is the change in internal energy?

The final energy is 1,700 J

Explanation: According to first law of thermodynamics:

=Final energy-initial energy=Change in internal energy

q = heat absorbed or released

w = work done by or on the system

w = work done by the system=  {Work done by the system is negative as the final volume is greater than initial volume}

q = +500J   {Heat absorbed by the system is positive}

w = work done by the system = -300J

Explanation:

beta is electron from nucleus

something from nucleus has changed, but charge must be same for cons of charge

elctricity and magnet is conversion to it