Recent content by P91

For degree level.

From mathematical concepts (eg trig) to the basic physical ones. Which should I know and understand?

Thanks guys. I now have these as my answers: a) 6e-10 J b) 2.86e15 J c) 1.66e8 Bq d) 1.41e-4 J e) 695 Sv f) non-mathematical explanation If anyone has worked them out, do your answers agree?

Questions Polonium-210 has a half life of 138.4 days. It decays to stable Pb-206 by emitting an alpha particle with a kinetic energy of 5.31 MeV. Alpha radiation of this energy has a relative biological effectiveness of 20. a) If the difference in mass of Po-210 and Pb-206 nuclei is...