Chapter 31: Q2CQ (page 1147)
What is the difference betweenγrays and characteristic x rays? Is either necessarily more energetic than the other? Which can be the most energetic?
γ rays are more energetic than x-rays
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
How does the finite range of the nuclear force relate to the fact that \({\rm{BE/A }}\) is greatest for \({\rm{A }}\)near\({\rm{60}}\).
A 5000-Ci \({}^{60}Co\) source used for cancer therapy is considered too weak to be useful when its activity falls to 3500 Ci. How long after its manufacture does this happen?
a) Calculate the energy released in the \({\rm{\alpha }}\) decay of \({}^{{\rm{238}}}{\rm{U}}\) . (b) What fraction of the mass of a single \({}^{{\rm{238}}}{\rm{U}}\) is destroyed in the decay? The mass of \({}^{{\rm{234}}}{\rm{Th}}\) is \(234.043593\,{\rm{u}}\). (c) Although the fractional mass loss is large for a single nucleus, it is difficult to observe for an entire macroscopic sample of uranium. Why is this?
Calculate the energy released in the\({{\rm{\beta }}^{\rm{ + }}}\)decay of\({}^{{\rm{22}}}{\rm{Na}}\), the equation for which is given in the text. The masses of\({}^{{\rm{22}}}{\rm{Na}}\)and\({}^{{\rm{22}}}{\rm{Ne}}\)are\({\rm{21}}{\rm{.994434}}\)and\({\rm{21}}{\rm{.991383u}}\), respectively.
A rare decay mode has been observed in which222Ra emits a14C nucleus. (a) The decay equation is\(^{222}Ra{ \to ^A}X{ + ^{14}}C\). Identify the nuclideAX. (b) Find the energy emitted in the decay. The mass of222Ra is222.015353 µ.
What do you think about this solution?
We value your feedback to improve our textbook solutions.
