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rjkz [21]
3 years ago
6

An incandescent bulb produces 520 lumens and has an efficacy of 13 lm/W.

Physics
2 answers:
Mars2501 [29]3 years ago
6 0

(520 lm) divided by (13 lm/W)

= (520 lm) times (W/13lm)

= (520/13) (lm · W / lm)

= 40 W
alisha [4.7K]3 years ago
4 0

Answer:

40

Explanation:

just took the test

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