4.已知60Co的半衰期為5.26 y,則其衰變常數λ為何?
(A)4.18×10-7 s-1
(B)4.18×10-8 s-1
(C)4.18×10-9 s-1
(D)4.18×10-10 s-1
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統計: A(27), B(39), C(1302), D(15), E(0) #965596
統計: A(27), B(39), C(1302), D(15), E(0) #965596