Atomic and Nuclear Physics Answers

A radiation worker stands 50 cm away from a radioactive source of 25 mCi 57Co. Calculate

the exposure value received by the worker while standing for 1 hr near the source. The isotop half-

life is 271.8 days.

The most common isotope of oxygen is oxygen-16 with a measured mass of 15.994915u.  

1. Determine the mass defect;
2. Determine the binding energy;
3. Determine the binding energy per nucleon.

The most common isotope of copper is copper-63 with a measured mass of 62.929601u.

1. Determine the mass defect;
2. Determine the binding energy;
3. Determine the binding energy per nucleon.

A certain radioactive isotope decays to one fourth of its original amount in 4.0 hours. What is its half life? A. 1.4 hours B. 2.0 hours C. 2.5 hours D. 3.4 hours

A radioactive atom emits an alpha particle. When this occurs, what happens to the mass number of the atom? A. It increases. B. It decreases. C. It remains constant. D. One can't determine what happens to the atomic number using only the information given.

How many scientific years can a 6.6 W LED lamp shine with 0.781 kg deuterium if 26.2% of the released energy in each reaction becomes electrical energy? Assume here that the neutron mass is m_n = 1.01 u instead of the table value.

A 0.100kg arrow is shot into a 0.400kg wood at rest. After the impact, the block and arrow moves with a common velocity of 3.0m/s. Calculate the velocity of the arrow just before entering the wood.

Find mass defect and binding energy for helium nucleus

Consider a H atom in D3/2 state. What are the possible values of Jz, and what are the possible orientation of J vector in space

Consider a H- atom in D5/2 state. What are the possible values of Jz? And calculate the different orientation of J vector in space