Yahoo 知識+ 將於 2021 年 5 月 4 日 (美國東岸時間) 停止服務,而 Yahoo 知識+ 網站現已轉為僅限瀏覽模式。其他 Yahoo 資產或服務,或你的 Yahoo 帳戶將不會有任何變更。你可以在此服務中心網頁進一步了解 Yahoo 知識+ 停止服務的事宜,以及了解如何下載你的資料。
amania_r
Lv 7
Slow neutrons. Do they collect at the centre of the Earth?
As neutrons are pretty inert and have mass, do slow neutrons collect at the centre of the Earth? If not, where do they end up?
2 個解答
相關度
- CharlesLv 61 十年前最愛解答
No, they do not "collect" at the center of the earth. Outside of the nucleus, free neutrons decay with a half-life of slightly more than 10 minutes. They decay into a a proton, an electron and an electron-antineutrino.
HTH
Charles
- 匿名1 十年前
What? You don't get free neutrons on a planet like this.
I've never heard of slow neutrons, maybe you want to read about neutron stars. We ain't on one.
還有問題嗎?立即提問即可得到解答。