200分求一道物理题 求懂英文高手解答Suppose that we have 39936 atoms of a radioactive substance with a half-life of 3 hours. a. How many atoms of that element remain after 15 hours?Answer= 多少atomsb. How many atoms remain after 21
来源:学生作业帮助网 编辑:作业帮 时间:2024/10/03 22:01:52
xRN@mh_0x M[$ ^*
(A9x.Q13-OD/ykff -ӌLu};? x˧t#9*S{,Y ؘ4&hQ@`-5DĴ:!X2k()Qܛ@ I- q>([pDZjHQE-l0Lf;w4y".
|9