Chapter 21, Problem 68
Which are classified as ionizing radiation: X rays, alpha particles, microwaves from a cell phone, and gamma rays?
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Complete and balance the nuclear equations for the following fission or fusion reactions: (a) 21H + 21H¡32He + _
Complete and balance the nuclear equations for the following fission reactions: (a) 23592U + 10n¡16062Sm + 7230Zn + _ 10n
The spent fuel elements from a fission reactor are much more intensely radioactive than the original fuel elements. (b) Given that only two or three neutrons are released per fission event and knowing that the nucleus undergoing fission has a neutron-to-proton ratio characteristic of a heavy nucleus, what sorts of decay would you expect to be dominant among the fission products?
A laboratory rat is exposed to an alpha-radiation source whose activity is 14.3 mCi. (a) What is the activity of the radiation in disintegrations per second? In becquerels?
A laboratory rat is exposed to an alpha-radiation source whose activity is 14.3 mCi. (b) The rat has a mass of 385 g and is exposed to the radiation for 14.0 s, absorbing 35% of the emitted alpha particles, each having an energy of 9.12 * 10-13 J. Calculate the absorbed dose in millirads and grays.
The table to the right gives the number of protons (p) and neutrons (n) for four isotopes. (a) Write the symbol for each of the isotopes.