Activity Time!

Climate|Biological Activity|Time|Questions

Narrate the changes in gathering as an activity in recent times.

If -((dN)/(dt))_(o) is the initial activity and -((dN)/(dt)) is the activity at time t in a radioactive disintegration then :

In a radioactive material the activity at time t_1 is R_1 and at a later time t_2 , it is R_1 . If the decay constant of the material is lamda , then