When something is hot, the protons speed up and that is energy.
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Flashlights convert electric energy to light energy and heat energy.
Least what? Anyway, heat energy is in a way the least useful form of energy, because you can normally convert any other energy to heat energy, but if you have heat energy, you can no longer convert all of it back to other forms of energy.
Heat energy is, to an extent, unusable energy. If you have a heat DIFFERENCE, you can convert part of the heat energy - but only part of it - to other kinds of energy. That part, you can of course convert to practically any other type of energy.
heat engine
yes you can
solar energy. heat from the sun gives you heat and changes to light because heat can be used for light.
Heat energy is, to an extent, unusable energy. If you have a heat DIFFERENCE, you can convert part of the heat energy - but only part of it - to other kinds of energy. That part, you can of course convert to practically any other type of energy.
Heat. In fact you can convert part of the heat into other types of energy, only if there is a heat difference between two objects - but you can never convert all heat into other types of energy.
heat(useful energy) and sound(waste energy)
All energy converters will give out heat. Tv's will get energy from their source and convert it to sound, light and heat energy.
To convert heat energy into mechanical energy.
All energy converters will give out heat. Tv's will get energy from their source and convert it to sound, light and heat energy.