Atomic and Nuclear Physics Answers

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

A mad scientist has been apprehended in their secret laboratory in some remote woods. The place is severely contaminated with polonium-210 which has a half-life of 138.4 days. A geiger counter used on scene shows 140 decays per second. 2 decays per second would be considered safe / equivalent to background radiation. How long until the site is safe?

Does positron emission is strong or weak interaction?

The ⁶₁₄𝐶 isotope has a half-life of 5730 yr. If at some time a sample contains 1.00 x 1022 carbon-14 nuclei, what is the activity of the sample?