修一条长7/8千米的路第一天修了全长的六分之一第二天修了全长的四分之一还剩下全长的几分之几没修?
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1/1/6-1/4=7/12
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2020-07-18
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修一条长7/8千米的路第一天修了全长的六分之一第二天修了全长的四分之一还剩下全长的几分之几没修?
So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.
So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.
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