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Mathematics, 31.12.2020 21:00 lydialinton23

A 150 W driveway light produces 9.3 × 104 J of light energy
over a 4.0 h period. If the light uses 2.06 × 106
J of energy in
the 4.0 h, then what is its efficiency?

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A 150 W driveway light produces 9.3 × 104 J of light energy
over a 4.0 h period. If the light...
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