Please teach me step by step thx!!
Btw,if anyone can check my answer for the following question... Sodium-24 emits a gamma raythat has an energy of 0.423 MeV.Assuming that the nucleus is initially at rest,determine the speed with which the nucleus recoils.
0.423*10^6eV*1.60*10^-19 =6.768*10^-14 mv=(E/c) (6.768*10^-14)/(398*10-26kg*3.00*10^8m/s) =5.67*10^-3m/s Am i right? Thanks a lot!
The mass of the nucleus is 3.98*10^-26kg
Sorry, the question should be like this ... not 4100 yrs The practical limit to ages that can be determined by radiocarbon dating is about 41000 yr. in a 41000 yr old sample, what percentage of the original carbon-14 remains?
I just asked the teacher. My teacher said i have to find the half-live of carbon-14 to solve it..., But thx for helping me