Recent content by cminissale77

9270 J are extracted from? A reversible heat engine operates between thermal reservoirs at 873 K and 198 K. If 9270 J are extracted from the hot reservoir, how much work is done by the heat engine?

Two playground swings are side by side. The children using the swings notice that one of the swings (swing 1) has a period of exactly 4.4 s. They also find that when the first swing has completed 10 oscillations, the other swing (swing 2) has completed 12 oscillations. (a) Is swing 2 longer or...