They do the same amount of work because it is the same staircase but the first person uses more power than the second person
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Increased trade gave the lower and middle classes a way to make money. Thats the answer I just got it wrong and I tried A and D. The answer is C.
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B. Carnegie showed how to organize large-scale production as well as how to use profits in philanthropic activities.
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answers should be on quizlet
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