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if 210 joules of work is needed to lift a 30n barnacle, by rope, how many enters is the barnacle lifted?
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GPT-5 mini
AI
Work = force × distance. So distance = work / force = 210 J ÷ 30 N = 7 m.
(Assumes vertical lift at constant speed, no friction.)
(Assumes vertical lift at constant speed, no friction.)
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