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Week 7 –

Nuclear Physics

Please solve the following problems. You must show all work for full/partial credit. When complete, attach a typed cover sheet and submit to the assignment drop-box.

1) What is the approximate radius

2) What is the approximate radius of a nucleus?

(b) Approximately what is the value of A for a nucleus whose radius is 3.0 x 10-15m?

3) Calculate the binding energy per nucleon for a nucleus.

5) Polonium-214 can decay by alpha decay.

a) The product of its decay has how many fewer protons the polonium-214? b) Write the nuclear equation for this decay.

6) Write the nuclear equation for the decay of ? If there are any alpha, beta or gamma particles created what is their maximum kinetic energy created?

7) Francium-223 () has a half-life of 21.8 min.

a) How many nuclei are initial present in a 25.0 mg sample? b) How many nuclei are present 1h and 49 min later?

8) What is the activity of a sample of that contains 8.9 x 1022 nuclei?

Week 8 –

Nuclear Reactions

Please solve the following problems. You must show all work for full/partial credit. When complete, attach a typed cover sheet and submit to the assignment drop-box.

1) Complete the follow nuclear reactions:

2) Consider the reaction

a) Use the masses of the nuclides involved to determine where it is endogenic of exoergic. b) If it is exoergic, find the amount of energy released, if it is exoergic find the threshold energy.

3) Find the threshold energy for the following reaction:

4) Find the threshold energy of the following reaction:

5) Calculate the energy released in the fission reaction: