(Solved): 7000J of heat are added to a system. The surroundings do 8400J of work on system. What is E i ...

$7000\mathrm{J}$ of heat are added to a system. The surroundings do $8400\mathrm{J}$ of work on system. What is $\Delta E$ in J? Answer: $1100\mathrm{J}$ of heat are extracted from a system. The system does $7400\mathrm{J}$ of work on the surroundings. What is $△E$ in J? Answer: The temperature of the system is fixed. $708\mathrm{J}$ of heat are added to the system. What is the work in J done on the system? Heip given in feedback. Answer: