Required information The PVdiagram shown is for a heat engine that uses 1.080 mol ofa diatomic ideal gas as its working substance. In the constanttemperature processes A and C, the gas is in contact with reservoirs at temperatures 373 K and 273 K, respectively. In constant-volume process B, the gas temperature decreases as heat flows into the cold reservoir. In constant-volume process D, the gas temperature increases as heat flows from the hot reservoir. 0.019 0.02 0.021 0.022 0.023 0.024 0.025 0.020 Volumecm') 0 compare the efciency of the heat engine to that of an ideal engine, what is the ratio of the efficiency of an ideal engine using the ame reservoirs to that of the heat engine, if the heat input per cycle is 2992 J