某物理兴趣小组的同学,用煤炉给l0kg的水加热,同时他们绘制了如图所示的加热过程中水温随时间变化的图线.若在4min内完全燃烧了2kg的煤,水的比热容为4.2×10的3次方J/(kg·℃),煤的热值约为3×
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/21 00:17:50
![某物理兴趣小组的同学,用煤炉给l0kg的水加热,同时他们绘制了如图所示的加热过程中水温随时间变化的图线.若在4min内完全燃烧了2kg的煤,水的比热容为4.2×10的3次方J/(kg·℃),煤的热值约为3×](/uploads/image/z/11219811-51-1.jpg?t=%E6%9F%90%E7%89%A9%E7%90%86%E5%85%B4%E8%B6%A3%E5%B0%8F%E7%BB%84%E7%9A%84%E5%90%8C%E5%AD%A6%2C%E7%94%A8%E7%85%A4%E7%82%89%E7%BB%99l0kg%E7%9A%84%E6%B0%B4%E5%8A%A0%E7%83%AD%2C%E5%90%8C%E6%97%B6%E4%BB%96%E4%BB%AC%E7%BB%98%E5%88%B6%E4%BA%86%E5%A6%82%E5%9B%BE%E6%89%80%E7%A4%BA%E7%9A%84%E5%8A%A0%E7%83%AD%E8%BF%87%E7%A8%8B%E4%B8%AD%E6%B0%B4%E6%B8%A9%E9%9A%8F%E6%97%B6%E9%97%B4%E5%8F%98%E5%8C%96%E7%9A%84%E5%9B%BE%E7%BA%BF.%E8%8B%A5%E5%9C%A84min%E5%86%85%E5%AE%8C%E5%85%A8%E7%87%83%E7%83%A7%E4%BA%862kg%E7%9A%84%E7%85%A4%2C%E6%B0%B4%E7%9A%84%E6%AF%94%E7%83%AD%E5%AE%B9%E4%B8%BA4.2%C3%9710%E7%9A%843%E6%AC%A1%E6%96%B9J%EF%BC%8F%28kg%C2%B7%E2%84%83%29%2C%E7%85%A4%E7%9A%84%E7%83%AD%E5%80%BC%E7%BA%A6%E4%B8%BA3%C3%97)
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