An incandescent bulb produces 520 lumens and has an efficacy of 13 lm/W.
2 answers:
(520 lm) divided by (13 lm/W)
= (520 lm) times (W/13lm)
= (520/13) (lm · W / lm)
= 40 W
Answer:
40
Explanation:
just took the test
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In this case to find the weight of an object you must use the formula.
W = mg
