0
Nuclear Physics
Most commonly known for its applications in nuclear energy and nuclear weapons, Nuclear Physics also has applications in medicine and archaeology. This category is for questions about the branch of physics that deals with the study of the forces, reactions, and internal structures of atomic nuclei, Nuclear Physics.
3,164 Questions
Decade is C10H22 so it would be 10(12.01) + 22(1.01) = 142.32 g / mol
Comment sont les element les plus lourds que l uranium fait?
Les éléments les plus lourds que l'uranium peut former sont les transuraniens, comme le plutonium, l'américium et le curium. Ces éléments sont produits dans des réacteurs nucléaires ou par des réactions de fusion nucléaire. Ils sont souvent utilisés pour des applications militaires ou énergétiques.
c. Vibrational energy occurs within a molecule when the bonds are stretched or bent. This type of energy is associated with the movement of atoms within a molecule as they vibrate about their equilibrium positions.
Are alpha particles big or small?
Absolutely small ... they're the nucleus of a helium atom (2protons & 2 neutrons)
-
But they are gigantic as compared to a beta particle ... which is just a free electron.
-
Note that gamma rays don't have any (rest) mass ... they're just radiation.
How do you go from a proton to the higgs boson?
since the proton-proton collision produce higgs bosons where was the higgs in the first place?
How is background radiation caused from rocks soil and cosmic rays?
Rocks and soil contain small amounts of naturally occurring radioisotopes as well as various amounts of fallout from atmospheric nuclear testing and the Chernobyl reactor accident. Cosmic rays are in large part nuclei ejected with high velocity by ancient supernovas.
Do gamma rays go through thin plastic?
Short Answer:
Gamma rays go through most light materials, such as plastic, building materials and are effectively diminished by heavier materials such as lead. It depends on the energy of the gamma ray, but the amount of radiation can often be cut in half by one centimeter thickness of a heavy metal. One centimeter of plastic or wood does not stop more than a few percent of the radiation.
Specific Examples:
To a rough approximation, the mass density of the material determines how well it blocks gamma rays, not just the thickness. Lead has a density over 11 times greater than water, so one inch thickness of lead should be worth 11 inches for shielding gamma rays. In the table below, you can see lead actually does even better. The thickness necessary to reduce gamma radiation by half is listed with the density of the material in parentheses.
lead 1.0 cm (11.3 g/cm^3
steel 2.5 cm (7.86 g/cm^3
concrete 6 cm (3.33 g/cm^3
soil 9 cm (1.99 g/cm^3
water 18 cm (1 g/cm^3)
wood 302 cm (0.56 g/cm^3)
air 15000 cm (0.0012 g/cm^3)
Gamma rays can have any energy, so these numbers not equally good for all gamma rays, but work for the sort of radiation humans might encounter due to radioactivity on Earth.
See related links and questions for more.
When thorium 232 emits a beta particle the prduct is?
The nuclear reaction is:
232Th--------------- 228Ra + α
What happens if you eat nuclear waste?
Depending on the isotopes in the waste and the amount eaten it may cause anything from instant death to radiation burns to cancer that takes decades to develop.
Would radioactive waste still remain dangerous after millions of years?
No. Short-lived isotopes will disappear by then; some long-lived isotopes may survive, but they will have a low level of radiation.
What general pattern is found on a graph of radioactive decay?
A general pattern found on a graph of radioactive decay is that the number of radioactive atoms decreases exponentially over time. The graph typically shows a steep initial drop followed by a gradual decrease as the radioactive material decays.
What were some reasons for the decay of Americas inner cities?
Affirmative action, which took effect March 6, 1961, provides advantages for people of a minority group who are seen to have traditionally been discriminated against, with the aim of creating a more egalitarian society through preferential access to education, employment, health care, social welfare, etc. Affirmative action required that colleges, businesses, etc take the best qualified person without regard to race, religion, national orgin, gender, and race.
How to know whether the velocity of a particle increases or decreases?
by analysing the direction of the forces acting on it. If the net force is acting in the opposite direction to the motion, it slows down, if it's in the same direction, it speeds up. If the net force is zero, the object continues moving at a constant velocity
Alpha particles have a mass of about 4 and a charge of +2, while beta particles have a mass of about 5x10-4 and a charge of -1. As such, the alpha particle interacts much more easily than the beta particle, and spends its energy more quickly.
How can the by-products of fission reactions be made safe?
There is no practical way of making fission by-products safe. However, by keeping them in thick lead containers, an opaque wall to radiation, the environment can be protected from their dangers. Other alternatives are being considered.
What happens to polonium when beta particles are emitted?
The beta minus decay of polonium isotopes is extremely rare. Beta decay involve the increase of the atomic number with 1.
Example: Po-218----------------beta minus---------------At-218
Which element was named after Enrico Fermi?
None but he did have a particle named after him called a fermion.
Are X-rays similar to beta rays?
Though both are forms of ionizing radiation, an X-ray is a form of electromagnetic radiation, while a beta ray is actually a beta particle. The beta particle is a form of particulate radiation, and the beta particle could be either an electron or a positron.
How does radioactive decay produce new elements?
In alpha decay, the nucleus loses two protons and two neutrons. The resulting element will therefore have an element number that is two less.In beta minus decay, a neutron gets converted to a proton. The resulting element will have one more proton - the element number will be one more.
In beta plus decay, a proton gets converted to a neutron. The resulting element will have one less proton - the element number will be one less.
How is tossing a coin similar to radioactive decay of an element?
If you toss a coin, there are fifty percent chances of getting the head or tail. In the radioactive decay also fifty percent atoms will brake down. When you toss the coin next time, you have 25 percent chances of getting the head or tail repeated. Same is the case with radioactive material. you will be left with 25 percent of the radioactive material after half life. Third time the chances of getting the same head or tail is 12.5 percent. Here you are left with 12.5 percent of the radioactive material left with after another half life.
What can nuclear particles do to the atmosphere?
It poisons the air with nuclear dust that can lead up to 2 to 2000 Roetgens. Theese when inhaled cause cancer and if it is highly radiocative, It can kill a man in seconds.
