(2021哈尔滨模拟)小聪在探究电水壶烧水的热效率问题时,选择了两个外形和材料都相同的自动控制电热水?
最新回答 (1条回答)
2024-05-19 回答
wordWrap:1px solid black:90%">W1可知:90%">吸
×100% 1 =从上问的效率比看出:sub:90%">W2 1 2000W×250s = 800W×700s
220V |
| ||||||||
P | ||||||||
U
| ||||||||
|
wordWrap:1px solid black:90%">W1可知:90%">吸
×100% 1 =从上问的效率比看出:sub:90%">W2 1 2000W×250s = 800W×700s
220V |
| ||||||||
P | ||||||||
U
| ||||||||
|