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8 men with 2 boys can do a piece of work in 7 days, which 25 men with 13 boys can do in 2 days. what fraction of the whole work, can be done in 1 day by 11 men with 20 boys?
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work of 14 j is done to move 2 c charge between two points on a conducting wire. what is the potential difference between the two points?
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during discussion, mary cannot focus because she is hungry. what kind of interference does being hungry referred to?
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