600 J of work are done on a system in a process that decreases the system's thermal energy by 400 J. Match the answers with questions. - W - work done on the system - Q - Heat into or out of the system - Eth - Change in thermal energy of the system A. 600 J B. 400 J C. 1000 J D. -400 J E. 0 J F. -200 J G. -600 J H. -1000 J I. 200 J