In Exercises 1 6, the graph of a polar equation is given. Select the polar equation for each graph from the following options.
Chapter 22 – Heat Engines, Entropy, and the Second Law of Thermodynamics 22.1 – Heat Engines and the Second Law of Thermodynamics - heat engine—a device that takes in energy by heat and expels a fraction of that energy by work E.g. coal is burned to heat water to steam to turn a turbine to drive a generator The cyclic process of a heat engine involves: 1. the working substance absorbs energy from a high-temperature energy reservoir 2. work is done by the engine 3. energy is expelled by heat to a lower-temperature reservoir *when doing the math, absolute values make all energy transfers by heat positive. Use signs intentionally to indicate direction* W = | |¿Q ∨¿ eng h c net work done by a heat engine - thermal efficiency—of a hea
