Question

A radioactive nuclide is produced at the constant rate of n
per second (say, by bombarding a target with neutrons).
The expected number N of nuclei in existence t seconds
after the number is N₀ is given by
(a) N = N₀e-????t
(b) N = n/????+N₀e-????t
(c) N = n/????+(N₀-n/????)e-????t
(d) N = n/????+(N₀+n/????)e-????t
Where ???? is the decay constant of the sample

Answer 1

Answer:

What's with the question marks ?