1. The problem statement, all variables and given/known data Given that we are working with biological samples of 5 and 10cm, is our assumption that the equation N = No e¯kt represents the radiation strength accurate? Explain. 2. Relevant equations N = No e¯kt 3. The attempt at a solution I'm completely stuck but... I believe it represents the transmission of a radiation beam through a given thickness of biological tissue. Sounds like radiation strength to me :c Please help?