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nhattan040507
2 năm trước
bài 4: đổ nước vào một bình kín rồi cắm vào một ống hút . khi nhiệt độ tăng nước dâng lên trong . bạn a giải thích: nước nóng nên nở ra dâng lên trong ống hút.bạn b giải thích: lớp không khí bên trong nóng lên nở ra rồi đẩy nước lên trong ống . em có ý kiến như thế nào về sự giải thích của hai bạn ấy ?
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