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Well, let's see. We have a unit "ft-lb", we have a unit "ft", we have a unit "lb" ... you know, I bet if you multiply the "lb" number by the "ft" number it will give you the "ft-lb" number.

(The fancy word for this sort of reasoning is "dimensional analysis", and you'd be surprised how far it will get you in solving problems in college chemistry and physics courses, even if you don't have the faintest clue what you're doing otherwise.)

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8y ago

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