A steam engine only converts 20 percent of its input energy into useful work?

A heat engine is a type of engine, (like the motor in a car) that produces ... Heat engines do just the opposite; they take the energy from being warm ... using a flame to heat water into steam, then using the steam to turn a turbine. ... is the percentage of energy input that the engine can convert to useful work.

Explanation:

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answer

i think the answer is a) as air pressure in an area increases, the density of the gas particles in that area decreases.

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so what is the problem with your lab report and whats the subject of the lab report? i will you