Thả một vật bằng nhôm khối lượng 0,2kg được đun nóng tới 150 độ C vào một chậu chứa 3 lít nước ở nhiệt độ 40 độ C. Coi như chỉ có quả cầu và nước truyền nhiệt cho nhau. Hãy tính nhiệt độ khi có cân bằng nhiệt? Cho nhiệt dung riêng của nước là 4200J/kg.K và nhiệt dung riêng của nhôm là 880J/kg.K A. 41,52 độ C. B. 50,55 độ C. C. 110 độ C. D. 60,4 độ C.

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