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sarahking1234abcde
2 năm trước
Tính công suất bằng 2 cách:Một lực sĩ cử tạ nâng quả tạ khối lượng 125kg lên cao 70 cm trong thời gian 0,3 s. Trong trường hợp này lực sĩ đã hoạt động với công suất trung bình là bao nhiêu? Lm giúp tớ vs
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