Khi đun nóng một lượng chất lỏng trong bình thủy tinh thì đại lượng nào thay đổi và thay đổi như thế nào? Quả bóng bị bẹp tại sao khi nhúng vào nước nó lại phồng lên? Khi tra khâu vào cán dao, tại sao bác thợ rèn lại phải nung nóng khâu? Bịt chặt miệng quả bóng bay vào miệng ống thủy tinh hình cầu. Dùng đèn cồn đốt dưới đáy bình thủy tinh thì có hiện tượng j xảy ra với quả bóng bay? Có 3 thanh: đồng, nhôm, sắt có chiều dài bằng nhau ở 0 độ c. Khi nhiệt độ của ba thanh cùng tăng lên 100độ , hãy so sánh chiều dài của ba thanh ở 100độ C? Tại sao ko thể dùng nhiệt kế rượu để đo nhiệt độ hơi nước đang sôi? (Biết rượu sôi ở 80độ , nước sôi ở 100độ C)

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