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Consider the application of the first law of thermodynamics in the functioning of a heat engine. Which of the following statements accurately describes this appli
(a) The first law guarantees that all energy input into the engine is converted into useful work.
(b) The first law indicates that the work produced by the engine equals the heat added to the system minus the heat released.
(c) The first law states that the engine can achieve 100% efficiency by converting all heat into work.
(d) The first law suggests that the engine's efficiency depends on the specific heat capacities of the working substance.