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Whyyyyyyreeeeeeee

1 năm trước

Hai bình có tiết diện bằng nhau. Bình thứ nhất chứa chất lỏng có trọng lượng riêng d1, chiều cao h1, bình thứ hai chứa chất lỏng có trọng lượng riêng d2 = 2.d1, chiều cao h2 = h1. Nếu gọi áp suất chất lỏng tác dụng lên đáy bình 1 là p1, đáy bình 2 là p2 thì

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Thu Thảo

1 năm trước

Vì p₁ = d₁h₁, p₂ = d₂h₂

Lập tỉ số $\frac{p_{2}}{p_{1}} = \frac{d_{2} h_{2}}{d_{1} h_{1}} = \frac{0, 6 h_{1} .1, 5 d_{1}}{d_{1} . h_{1}} = 0, 9$

vominhquan111109

1 năm trước

Giải thích các bước giải:

- Áp suất của nước ở đáy bình thứ nhất là:

$p_{1} = d_{1} . h_{1}$

- Áp suất của nước ở đáy bình thứ hai là:

$p_{2} = d_{2} . h_{2}$

- Suy ra:

$p_{2} = 1, 5 d_{1} . 0, 6 . h_{1} = 0, 9 d_{1} . h_{1} = 0, 9 p_{1}$

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