TreeMan122 TreeMan122

25-05-2020
Physics

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7. A stereo is able to convert 20% of its electrical energy into sound. If 1000 J of sound energy is produced, calculate the electrical energy used [Show all work].

8. A vehicle is only 18% efficient. How was the other 82% of the energy lost?

Respuesta :

917006450984help 917006450984help

25-05-2020

Answer:

As 20/100 E= 1000

E= 10,000/2

=5000J

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