Respuesta :

Answer:

heat and sound.

Explanation:

Though some would argue that the heat is not useful. I guess it depends on if your hands are cold.

Based on the information, useful energy is transferred away from the MP3 player by light, heat, and sound.

It should be noted that energy transfer can be mechanically, electrically, by radiation, and by heating.

Energy can be transferred through force, an electrical current, light waves, sound waves, and heat. Based on the diagram, the useful energy is transferred away from the MP3 player by light, heat, and sound.

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