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hoangthitho1993
2 năm trước
Một vật hình lập phương có cạnh 8cm được nhúng chìm vào trong nước biết D=750kg/m3 d nước =10000N/m3 a) Tính chiều cao phần vật nhô ra khỏi mặt nước b) Tính lực đẩy Acsimet tắc dụng lên vật c) Để vật vừa chìm hoàn toàn trong nước người ta khoét 1 looxrooif sau đó lắp đầy chì biết D=11,3g/m3 .Tính thể tích của phần miệng khoét
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