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Physics, 18.10.2021 07:10 martinezizzie

Một phích cách nhiệt chứa 139 cm3 cà phê ở 80°C. Bạn bỏ vào trong đó 12g nước đá ở nhiệt độ tan để làm lạnh cà phê. Cà phê sẽ lạnh đi bao nhiêu độ khi nước đá tan hết (coi nhiệt dung riêng của cà phê như nước nguyên chất).

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Một phích cách nhiệt chứa 139 cm3 cà phê ở 80°C. Bạn bỏ vào trong đó 12g nước đá ở nhiệt độ tan để l...
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