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ngoquynhchi1572008
2 năm trước
Đo được 40 giọt nước rơi từ một ống nhỏ có khối lượng 1,874g. Đo được đường kính của giọt nước khi bắt đầu rơi bằng 1,9mm. Tính suất căng mặt ngoài của nước. Biết $D_{nước} = 1000kg/m^{3}$
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