Energy can be changed from one form to another. changes in the form of energy are called energy conversions. in an automobile engine, fuel is burned to convert into heat energy. the is then changed into . identify the correct order of energy conversion in an automobile engine. a) heat → chemical → mechanical b) chemical → mechanical → heat c) mechanical → heat → chemical d) chemical → heat → mechanical

D (chemical  -> heat -> mechanical)

In automobile engines the petrol/diesel fuel enter in to the engine cylinder, due to spark at the end of the compression, fuel burnt increase the temperature and pressure, develops heat (chemical energy -> heat energy). This heat energy acts on a piston develops the work on the crankshaft ( Heat energy -> Mechanical energy).

where are the vectors ?

a straight line sloped