(a) Compute the Coulomb repulsion energy between two nuclei of 16O that just touch at their...

(a) Compute the Coulomb repulsion energy between two nuclei of ¹⁶O that just touch at their surfaces. (Use R₀ = 1.2 10^-15 m as necessary.)
________MeV

(b) Do the same for two nuclei of ²³⁸U.

______MeV

(d) ²³Mg decays to ²³Na by positron beta decay. (Use values from this table.)

          (a) What is the Q value for this decay?
              ________MeV

           (b) What is the maximum kinetic energy of the positrons?
               ________MeV

________MeV

(e) A piece of wood from a recently cut tree shows 14.0 ¹⁴C decays per minute. A sample of the same size from a tree cut thousands of years ago shows 2.2 decays per minute. What is the age of this sample?

______ yr

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genius_generous answered 1 year ago

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