试题与答案

[C水=4.2×103J/(kg·℃),气压为1标准大气压] (1)这壶最多能装

题型:计算题

题目:

[C=4.2×103J/(kg·℃),气压为1标准大气压]

(1)这壶最多能装多少质量的水?

(2)这壶水从20℃到烧开,需要吸收多少热量?

(3)假如电能全部转化为水的内能且全部被水吸收,则需要多长时间烧开这壶水?

答案:

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参考答案:C

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