1) Uranium-236 undergoes nuclear fission to produce barium-144, krypton-89 and three free neutrons.

What is the energy released in this process?

2) A nucleus Z has atomic number Z and mass number A.

The mass defect of this nucleus is Δm.

What is the binding energy per nucleon of the nucleus?

3) The Rutherford scattering experiment led to

4) A Geiger counter is placed near a radioactive source and different materials are placed between the source and the Geiger counter.

The results of the tests are shown in the table.

What is the radiation emitted by the source?

5) The number of parent nuclei in a sample of a radioactive element is N at time t. The radioactive element has a half-life t_½.

The rate of decay is proportional to