作业帮P.112(8)物理题 姐姐哥哥们,state whether the following statements are correct or not.(a)plastic,wood and glass are good insulators because they lack free electrons.(b)separetion between molecules in a gas is greater than that in a solid.
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P.112(8)物理题 姐姐哥哥们,state whether the following statements are correct or not.(a)plastic,wood and glass are good insulators because they lack free electrons.(b)separetion between molecules in a gas is greater than that in a solid.
P.112(8)物理题 姐姐哥哥们,
state whether the following statements are correct or not.
(a)plastic,wood and glass are good insulators because they lack free electrons.
(b)separetion between molecules in a gas is greater than that in a solid.
P.112(8)物理题 姐姐哥哥们,state whether the following statements are correct or not.(a)plastic,wood and glass are good insulators because they lack free electrons.(b)separetion between molecules in a gas is greater than that in a solid.
a是错的,b是对的.虽然三个都是绝缘体,并不是没有电子,而是正电荷数与负电荷数相同,整个的呈不带电性,因而是绝缘体.
b气体容易压缩,比如用注射器抽压空气很容易做到,说明气体的间隙是固体和液体中最大的.
选a，英语学得不大好，但是看懂了，绝缘体内几乎没有能够自由移动的电荷。
b项错在气体分子间 间隔比固体大，所以相互作用力比固体小，说的不对。如果要修正（b），该怎样？用英文？呵呵，你可以用中文哦哦，那真的谢谢体谅了，我英语真的不咋地。。在气体中分子间隔比在固体中间隔小。。就是这样好，谢谢，我也有我的顾虑抱歉抱歉 b是对的，那个great意思是大，整句话意思是 分子气体中间隔大于分子在固体...
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选a，英语学得不大好，但是看懂了，绝缘体内几乎没有能够自由移动的电荷。
b项错在气体分子间 间隔比固体大，所以相互作用力比固体小，说的不对。
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（b）说的是气体中的分子之间的分离大於固体中。不一定对 要看是什么气体和固体 选a啊
选A啊，A说的三个都是绝缘体没错，B说气体分子比固体分子间做用力强明显不对