4 200 A 20 The figure shows the number of the remaining

Last updated: 6/12/2023

4 200 A 20 The figure shows the number of the remaining nucleus N 20 fift fr of a radioactive source as a function of time t S2 1 L 0 20 40 60 t sec 4 200 A The relationship between N and tis 1 N 1000 e 20 2 N 20e 20 3 N 3 e 0 05 4 N 20 e 0 05 N Of 0 20 1 N 1000 e 20 2 N 20e 20 3 N 3e 10 05 4 N 20e 0 05 40 t sec