Question: A student exchanges the stock headphones ( 1 = 8 9 dB ) for her mp 3 player for a new set that is louder

A student exchanges the stock headphones (1=89 dB) for her mp3 player for a new set that is louder (2=94 dB).
If the first set produced a power of P1=0.5 W how much power does the new set produce, P2 in W?

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