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Mathematics, 17.12.2019 07:31 queenkimm26
Listen two construction cranes are used to lift identical 1200-kilogram loads of bricks the same vertical distance. the first crane lifts the bricks in 20. seconds and the second crane lifts the bricks in 40. seconds. compared to the power developed by the first crane, the power developed by the second crane's the same twice as greathalf as greatfour times as great?
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