110

In general, the efficiency of an internal combustion engine is 30

percent and the remaining 70 percent is mainly dissipated as

- energy.

heat

O mechanical

chemical

10

kinetic

10

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lence

10

gy

Heat

Explanation:

An internal combustion engine convert a chemical energy to mechanical (kinetic) energy, which causes motion. the two types are: diesel powered or gasoline powered internal combustion engine. It has major applications in cars, trucks and vehicles.

Generally, internal combustion engines has a low efficiency due to some factors; rate of combustion, amount of available air etc. With the diesel engine having greater efficiency compared to that of gasoline engine.

According to thermodynamics, the remaining 70% would be dissipated to the surroundings in the form of heat.

i heard they are taking it off i hope this isn't true but otherwise if it doesn't get taken off it will probably be in early december or early january of 2018-2019

question - in 1827, john walker, a druggist in a small english town, tipped a splint with sulphur, chlorate of potash, and sulphid of antimony, and rubbed it on sandpaper, and it burst into flame. the druggist had discovered the first friction-chemical match, the kind we use to-day. it is called friction-chemical because it is made by mixing certain chemicals together and rubbing them. although walker's match did not require the bottle of acid, nevertheless it was not a good one. it could be lighted only by hard rubbing, and it sputtered and threw fire in all directions. in a few years, however, phosphorus was substituted on the tip for antimony, and the change worked wonders. the match could now be lighted with very little rubbing, and it was no longer necessary to have sandpaper upon which to rub it. it would ignite when rubbed on any dry surface, and there was no longer any sputtering. this was the phosphorus match, the match with which we are so familiar. according the paragraph what was the benefit of the new phosphorus match? it burst into flame when rubbed on sandpaper. it was made by mixing chemicals. it could be ignited on any dry surface. it threw fire in all directions.

answer - matches required natural chemicals