One of the Most Efficient Engines Built So Far Has

question 31

Short Answer

One of the most efficient engines built so far has the following characteristics: The combustion chamber temperature is 1900°C, the exhaust temperature = 430°C, 7.0 × 10⁹ cal of fuel produces 1.4 × 10¹⁰ J of work in one hour. (1 cal = 4.186 J)
(a) What is the actual efficiency of this engine?
(b) What is the power output of this engine?
(c) What would be the maximum possible efficiency for an engine using the same temperature extremes?

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Definitions:

Brain Stem

The part of the brain connecting the spinal cord to the forebrain and cerebrum, controlling basic life functions like breathing and heart rate.

Heart Rate

The number of heartbeats per unit of time, typically expressed as beats per minute (BPM).

Endorphins

Natural chemicals in the body that interact with the brain's receptors to reduce pain and boost happiness, often referred to as the body's natural painkillers.

Runner's High

A euphoric state often experienced by long-distance runners, attributed to the release of endorphins.