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		<h1>Bài tập về áp suất chất lỏng, Bình thông nhau</h1>
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			<li>Thứ bảy - 12/09/2020 08:57</li>
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			Bài 1: Một người thợ lặn mặc bộ áo lặn chỉ chịu được áp suất tối đa là 300000N/m2 <br />a. Hỏi thợi lặn có thể lặn sâu nhất là bao nhiêu trong nước biển có d = 10300N/m3<br />b. Tính lực của nước biển tác dụng lên cửa kính quan sát của áo lặn có diện tích là 200cm2 khi lặn sõu 25m
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			Hướng dẫn<br  />
<img alt="" height="176" src="https://khobaitap.com/uploads/news/2020_09/image_7.png" width="644" /><br  />
<span style="font-size:14pt"><span style="tab-stops:center 238.1pt"><span style="font-family:&#039;.VnTime&#039;,sans-serif"><b><span lang="PL" style="font-family:&#039;Times New Roman&#039;,serif">Bài 2:</span></b><span lang="PL" style="font-family:&#039;Times New Roman&#039;,serif"> Dưới đáy của một thùng có lỗ hỡnh trũn đường kính 2cm. Lỗ này được đạy kín bằng một lắp phẳng được ép từ ngoài vào bằng một lũ so tỏc dụng một lực ộp bằng 40N. Người ta đổ thủy ngân vào thùng. Hỏi độ cao cực đại của mực thủy ngân để nắp không bị bật ra? Biết KLR của thủy n gân là 13600kg/m<sup>3</sup></span></span></span></span><br  />
<img alt="" height="239" src="https://khobaitap.com/uploads/news/2020_09/image_8.png" width="610" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;.VnTime&#039;,sans-serif"><b><span lang="FR" style="font-family:&#039;Times New Roman&#039;,serif">Bài 3: </span></b><span lang="FR" style="font-family:&#039;Times New Roman&#039;,serif">Một chiếc cốc nổi trong bình chứa nước, trong côc có một hòn đá. Mức nước trong bình thay đổi thế nào, nếu lấy hòn đá trong cốc ra rồi thả vào bình nước.</span></span></span><br  />
Hướng dẫn<br  />
<img alt="" height="260" src="https://khobaitap.com/uploads/news/2020_09/image_9.png" width="643" /><br  />
<span style="font-size:14pt"><span style="font-family:&#039;.VnTime&#039;,sans-serif"><b><span lang="PT-BR" style="font-family:&#039;Times New Roman&#039;,serif">Bài 4: </span></b><span lang="PT-BR" style="font-family:&#039;Times New Roman&#039;,serif">Hai hình trụ A và B đặt thẳng đứng có tiết diện lần lượt là 100cm<sup>2</sup> và 200cm<sup>2</sup> được nối thông đáy bằng một ống nhỏ qua khoá k như hình vẽ. Lúc đầu khoá k để ngăn cách hai bình, sau đó đổ 3 lít dầu vào bình A, đổ 5,4 lít nước vào bình B. Sau đó mở khoá k để tạo thành một bình thông nhau. Tính độ cao mực chất lỏng<b> </b>ở mỗi bình. Cho biết trọng lượng riêng của dầu và </span></span></span><br  />
<span style="font-size:14pt"><span style="font-family:&#039;.VnTime&#039;,sans-serif"><span lang="PT-BR" style="font-family:&#039;Times New Roman&#039;,serif">của nước lần lượt là: d<sub>1</sub>=8000N/m<sup>3</sup> ; d<sub>2</sub>= 10 000N/m<sup>3</sup></span></span></span><br  />
Hướng dẫn<br  />
<img alt="" height="263" src="https://khobaitap.com/uploads/news/2020_09/image_10.png" width="691" /><br  />
<b><span style="font-size:14.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">&nbsp;Bài 5: </span></span></b><span lang="FR" style="font-size:14.0pt"><span style="font-family:&#039;Times New Roman&#039;,serif">Một bình thông nhau có chứa nước. Hai nhánh của bình có cùng kích thước. Đổ vào một nhánh của bình lượng dầu có chiều cao là 18 cm. Biết trọng lượng riêng của dầu là 8000 N/m<sup>3</sup>, và trọng lượng riêng của nước là 10 000 N/m<sup>3</sup>. Hãy tính độ chênh lệch mực chất lỏng trong hai nhánh của bình</span></span><br  />
<img alt="" height="313" src="https://khobaitap.com/uploads/news/2020_09/image_11.png" width="679" />
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