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megamanoggy
2 năm trước
Người ta cung cấp cùng một nhiệt lượng cho hai vật có khối lượng bằng nhau, vật 1 làm bằng thép độ tăng nhiệt độ ∆t1 , vật 2 làm bằng nhôm có độ tăng nhiệt độ là ∆t2 . Biết nhiệt dung riêng của thép là 460J/kg.K, của nhôm là 880J/kg.K. Khi đó A: 2∆t1 = ∆t2 B: ∆t1 = ∆t2 C: ∆t1 > ∆t2 . D: ∆t1 < ∆t2
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