The efficiency of a heat engine is 0.20 when it is expelling 4.0 $\times$ 10⁸ J of heat. The work that the engine is producing is

Question

Quizplus · Accepted Answer

The efficiency of a heat engine is given by the work output divided by the heat input. Given an efficiency of 0.20 (or 20%) and a heat expulsion of $4.0 \times 10^{18} J$, the work produced is $0.20 \times 4.0 \times 10^{18} J = 0.8 \times 10^{18} J$, which simplifies to $8.0 \times 10^{17} J$. However, none of the options correctly matches this calculation based on the provided information and the standard formula for efficiency. Given the options, the closest match to the expected calculation would be $1.0 \times 10^{18} J$, assuming a possible misinterpretation of the calculation or a typographical error in the question or options.

The Efficiency of a Heat Engine Is 0 ×\times× 108 J of Heat

The Efficiency of a Heat Engine Is 0 $\times$ 10⁸ J of Heat