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A cell phone charger uses 5.6 Joules of energy per second when plugged into an outlet but only 1.7 Joules of energy per second actually end up in the cell phone battery. What is the efficiency of the charger?
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Feb 20, 2021
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A cell phone charger uses 5.6 Joules of energy per second when plugged
into an outlet but only 1.7 Joules of energy per second actually end up in
the cell phone battery. What is the efficiency of the charger?
1.) 30%
2.) 3.29%
3.) 329%
4.) 9.59%
Mathematics
high-school
Uliana Pavelko
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Uliana Pavelko
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Answer:
3 because it is............
Garry Taylor
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Feb 25, 2021
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Garry Taylor
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