JiTT Exercises

Please Note: It may not always be possible to include the necessary special characters, superscripts, subscripts, etc. in e-mail responses to this group of exercises. We suggest that you discuss this matter with your professor/class and decide upon a system for indicating such characters. You may cut/paste some characters and/or Greek letters from Microsoft Word, using the Insert menu. Alternatively, we suggest that you agree upon abbreviations for or spell out symbols, Greek letters, or characters and indicate superscripts and subscripts by using "sup", "sub", or up/down carats.


1			Explain why neutron-activated nuclides tend to decay by β^- rather than β⁺.




2			Section 29.8 states that the total energy released by the proton-proton cycle is the same as that released by the carbon cycle. Why must the total energy released be the same?




3




4			How many protons are found in a ¹³⁶Xe nucleus?




5			Find the binding energy of a deuteron (a ²H nucleus). The mass of a deuteron (not the deuterium atom) is 2.013 553 u.




6			(a) Find the binding energy of the ¹⁶O nucleus. (b) What is the average binding energy per nucleon? Compare your answer with Fig. 29.4. Fig. 29.4




7




8




9			An alpha particle produced in radioactive alpha decay has a kinetic energy of typically about 6 MeV. When an alpha particle passes through matter (such as biological tissue), it makes ionizing collisions with molecules, giving up some of its kinetic energy to supply the binding energy of the electron that is removed. If a typical ionization energy for a molecule in the body is around 20 eV, roughly how many molecules can the alpha particle ionize before coming to rest?




10

Your Results:

E-mail Your Results