Trade of heavy vehicle mechanic



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5.0 Heat


Heat is internal energy and is capable of doing work.

Heat engines obtain their power by burning fuel - the chemical energy in the fuel is released by ignition to make the gas very hot. This causes a force which pushes the piston down the cylinder.





Heat changed to work

Heat flows from a hot to a cold surface


A hot object placed beside a cold surface will cause the heat to ‘flow’ until the two things are at the same heat.



Heat flows from a hot object to a cold object


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