Nuclear Weapons

Most (>90%) of it will be gone in weeks to months. The remainder can take years to centuries, or longer.

It all depends on isotope halflives.

(Additional reply):

At Hiroshima 95% of the deaths from radiation, by those who survived the blast were by those within 2.5 kilometres of the hypocentre and who remained in that location for the three months following.

Most radiation exposure is within 48 hours of the blast and often arises from dust and soil sucked into the mushroom cloud which then falls as radioactive rain and ash.

To protect oneself one either has to leave the vicinity as quickly as possible without breathing the dust or shelter deep beneath ground.

After three months the exposure would be negligible. Exposure is cumulative so if you avoid the early days, chances of sickness after three months are remote.

Yes, plutonium is used as a key component in nuclear bombs. It is highly fissile and undergoes nuclear chain reactions to release a large amount of energy when triggered, leading to the explosive power of the bomb.

• Fusion reaction combines isotopes of hydrogen to make helium and release energy. This requires temperatures in the millions of Kelvins to start.
• Fission reaction breaks up isotopes of heavy elements (Uranium & Plutonium) into lighter elements (fission fragments, a major part of fallout) and release energy. This can start a normal temperatures.

Uranium is used in weapons because it has a high density, making it effective at penetrating armor and causing destruction. Uranium-235, a radioactive isotope of uranium, is also used in nuclear weapons because it is fissile, meaning it can sustain a chain reaction and release a large amount of energy in nuclear reactions.

A nuclear power plant uses a slow, controlled nuclear chain reaction to heat water and generate electricity.

A nuclear bomb uses a very rapid uncontrolled nuclear chain reaction in order to generate a massive explosion.

In remote isolated places. Most testing (except for a few countries) is now done underground, to prevent fallout.

The US has ceased all physical testing and uses only computer simulated tests.

yes and no

yes because it makes the world a safer place because countries that have them feel secure

no because it you attack someone like the united states well basically your srry you attacked us and you get blown to smithereens

A neutron bomb is a form of nuclear weapon. It explodes in several steps. In the first step, control circuits fire electronic blasting caps cause conventional explosives to detonate. They are shaped in such as way that the explosion crushes a ball of nuclear material (mainly plutonium) causing that to produce nuclear fission (an atomic explosion). THAT serves as the trigger to a nuclear fusion explosion- (similar to the hydrogen bomb). This releases heat, blast, and neutrons.

No, once a nuclear weapon is fully assembled and armed, it cannot be easily disarmed or "deactivated" due to safety mechanisms in place to prevent accidental detonation. Disassembling a nuclear weapon without triggering a nuclear explosion requires highly specialized knowledge and equipment.

That varies from design to design. The physics package is typically quite small, the chemical explosives can be much bigger depending on the types used.

India conducted its first nuclear test in 1974 to demonstrate its ability to develop nuclear weapons technology. The test, known as "Smiling Buddha," was considered a strategic move to establish India's nuclear deterrence capabilities in the region.

The International community as a whole and several key states in particular, must grapple with need to resolve the contradiction at the heart of the nuclear Non-Proliferation Treatywhich some claim means nuclear energy is an inalienable right. Theinalienable right to nuclear energy is a historical and political mistake.

Waste disposal of nuclear materials is a serious problem because these materials remain radioactive for thousands of years, posing significant health and environmental risks if not properly stored. Improper disposal can lead to contamination of soil, water, and air, threatening ecosystems and human health. Safely managing and storing nuclear waste is essential to prevent long-term consequences.

A hydrogen bomb is a series or sequence of events that must take place in a specific order. Only a very small part of that is chemical. Conventional chemical explosives are used as the trigger to begin the sequence. Electrical detonators are activated by an electric current that creates heat in the detonator. That heat causes a small amount of explosive in the detonator to to explode. THAT explosion is chemical- an unstable chemical drops from a high to a lower energy level, giving up heat that creates a shock wave. That shock wave causes another chemical reaction- in the main explosive lenses of the bomb. Those chemical explosives ALSO drop to a lower energy level in a chemical reaction- creating a larger shock wave. That shock wave then physically crushes a mass of plutonium, and begins a NUCLEAR process- where the ultra-dense compressed plutonium undergoes nuclear fission, breaking down into lighter elements, releasing tremendous heat, shock, and free neutrons. That FISSION reaction triggers the next stage, where very light elements such as hydrogen are compressed to the point that they FUSE into heavier elements, liberating a greater amount of energy in the form of heat, blast, and radiation.

There is no such thing. The hydrogen bomb is a very complicated mechanism, not a chemical!

A traditional nuclear fission bomb is used as a trigger in a hydrogen bomb. The explosion from the fission bomb generates the high temperatures and pressures needed to initiate the fusion reaction in the hydrogen bomb.

Yes, an underground nuclear bomb test has the potential to create seismic waves that can be detected and recorded as an earthquake. The magnitude of the seismic event would depend on the yield of the nuclear explosion and the geology of the surrounding area.

Twinkies have a long shelf life due to their low moisture content and the artificial preservatives used in their production. Although they may not physically survive a nuclear explosion, the myth of their indestructibility comes from their ability to stay edible for a long time under normal conditions.

Nuclear energy is important because it is a low-carbon energy source that can help reduce greenhouse gas emissions. It also provides a reliable and consistent source of electricity, has a high energy density, and can contribute to energy security by reducing dependence on fossil fuels. Additionally, nuclear technology has applications in areas such as medicine, agriculture, and industry.

Nuclear missiles can travel thousands of kilometers, with some intercontinental ballistic missiles (ICBMs) capable of reaching targets on the other side of the world. The exact range depends on the specific missile and its design.

Plutonium is the preferred fuel for nuclear bombs due to its greater efficiency in sustaining a nuclear chain reaction compared to uranium. Its higher fissionability and smaller critical mass make it the more suitable choice for achieving the explosive yield required in nuclear weapons.

Nuclear power plants are designed with safety features to prevent accidents and limit the release of radiation. While accidents can still occur, the risk of a catastrophic event is much lower than with nuclear weapons, which are intentionally designed to cause destruction on a large scale.