Mathematics, 11.07.2019 01:40 btsheygirl
10 ! ! lifting a chair that weighs 4 kg to a height of 40 cm takes 16 j of energy. a) what amount of energy would be needed to lift a similar chair to a height of 80 cm? b) what amount of energy would be needed to lift a chair that weighs 2kg to a height of 40 cm?
Answers: 2
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10 ! ! lifting a chair that weighs 4 kg to a height of 40 cm takes 16 j of energy. a) what amount...
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