問題詳情

38. It takes time T for M gram(s) of a radioactive substance to decay to M /4 gram(s). How long does ittake for M/4 gram(s) of the substance to decay to M /8 gram(s)?
(A)2T
(B)T
(C)T/2
(D)T2
(E)

參考答案

答案：C
難度：計算中-1
書單：沒有書單，新增