macogarasi
macogarasi macogarasi
  • 14-01-2021
  • Physics
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An electric heater is 90% efficient. How much useful energy is produced from 8000 J?

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Respuesta :

amanda777 amanda777
  • 14-01-2021

Answer:

7200J

Explanation:

you have to find 90 percent of 8000 J to find total efficiency

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