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huyentran10
2 năm trước
*GIẢI HỘ MK VỚI (VOTE 5*) : Bài 3: Tính nhiệt lượng mà 750g nước tỏa ra khi nó nó hạ nhiệt độ từ 980C xuống 240C Bài 4: Một quả cầu bằng kim loại có khối lượng 900g đang ở 150 0C. Nhiệt lượng mà quả cầu tỏa ra khi nó hạ nhiệt độ xuống nhiệt độ t1 là 33120J. Biết nhiệt dung riêng của sắt là 460(J/Kg.K). Tính nhiệt độ t1 ?
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