Or if you want negative numbers, between negative 2 billion and positive 2 billion, but it's a finite range.
或者你想储存一个负数,就必须位于负20亿到,正20亿之间,是个有限的范围。
putting all those things together, if you looked at this question again we'd get 100% on it, 0 9 that our only option here is 0. 9, and that it's not the negative, it's the positive version, because we're talking about how much energy we have to put into the system in order to eject an electron.
把这些放在一起,你们再看一下题目,大家100%都能选对,我们唯一的选择就是这个,它不是负数,它是正的,因为我们说的,是要,把电子激发出来,需要提供的能量。
Wrev So minus w reversible, 1 p2 is less than p1, so p2 over p1 is less than one, log of something less than 1 is negative times negative.
那么,而p2小于p1,p2/p1小于,取对数后是负数,负负得正。
应用推荐