6. After Experiment 4 is completed, the student places a 200-gram block on top of the piston, which pushes it down by 5 cm. As a result, the student should find that the internal energy of the gas: A) decreases by 1 J. W- Fid B) decreases by 0.1 J. WDPE C) increases by 0.1 J. increases by 1 J. my T black 2009 FN piston Flyblay Trav Marcuse 6