I had some calculations to do for my physics assignment on radioactivity. One of the questions I am stuck on - the actual calculation was very simple but then it asks me to state one assumption made, but I dunno what assumtions I did make LOL!
Please can anyone help? Here's the question (and my calculation):
1. A radioactive source emits β particles. It has an activity of 2.8 × 107 Bq. Estimate the number of β particles emitted in a time interval of 2.0 minutes. State one assumption made.
A = dN / dt
A x dt = dN
(2.8 × 10^7) x 120 = 3.36 x 10^9
Would reeeealy appreciate some help, my teacher doesn't help us whatsoever LOL!
Thank you x