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冷水温度是t 1 ，热水温度是t 2 ，为了使冷热水混合后的温度为t 3 ，不计热量损失，冷水和热水的质量比是
冷水温度是t 1 ，热水温度是t 2 ，为了使冷热水混合后的温度为t 3 ，不计热量损失，冷水和热水的质量比是
2025-04-07 07:43:48
推荐回答（1个）
回答1：
冷水吸收的热量：
Q
吸
=cm
1
（t
3
-t
1
），
热水放出的热量：
Q
放
=cm
2
（t
2
-t
3
），
由题知，Q
吸
=Q
放
，
∴cm
1
（t
3
-t
1
）=cm
2
（t
2
-t
3
），
解得：
m
1
m
2
=
t
2
-
t
3
t
3
-
t
1
．
故选C．
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