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Physics, 12.04.2021 15:50 uhhgray

A man carries 40 tiles from the ground to the roof of a house. each tile has a mass of 1.5 kg . the roof of the house is 20 m above the ground. how much work does the man do against graviy on the tiles in carrying the roof? ​

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A man carries 40 tiles from the ground to the roof of a house. each tile has a mass of 1.5 kg . the...
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