Nuclear Weapons

Nuclear weapons use nuclear fission reactions, where heavy atomic nuclei, like Uranium-235 or Plutonium-239, split into lighter nuclei, releasing a large amount of energy in the process. This energy release causes a chain reaction, leading to a powerful explosion.

No, a single nuclear weapon is not powerful enough to blow up an entire continent. The destructive power of a nuclear weapon is concentrated in a relatively small area known as the blast radius. The impact would be devastating locally, but the effect would not extend to an entire continent.

Yes, a supercritical mass of fissile material such as uranium or plutonium can accelerate until a nuclear explosion occurs. When the mass reaches a critical point, a rapid chain reaction takes place, releasing a large amount of energy in the form of heat and pressure, resulting in an explosion.

No, the bomb was built in Los Alamos, NM. However the plutonium used in the Trinity test shot and the Fat Man bomb dropped on Nagasaki was made in reactors at Hanford, WA. The uranium used in the Little Boy bomb dropped on Hiroshima was enriched in Oakridge, TN.

I have seen them as small as 11 inch diameter spheres, 6 inch by 20 inch artillery shells, 6 inch by 32 inch conical ICBM MIRV warheads, to as large as 5 foot diameter by 18 foot long gravity bombs. The first fusion bomb, the 1952 Ivy Mike device was 20 feet in diameter and 80 feet tall with 2 foot thick steel walls (this is the physically largest ever built).

How big/small do you want one? The size is usually limited by the capability of the delivery vehicle used.

Albert Einstein did not invent the nuclear bomb; he was a physicist who played a role in alerting President Roosevelt to the potential of atomic weapons. The atomic bomb was developed and first used during World War II by the Manhattan Project team led by J. Robert Oppenheimer.

The size of the nuclear bomb required to wipe out a nation would depend on the size of the nation and the level of destruction desired. A single high-yield nuclear weapon could devastate a small country, but larger nations would likely require multiple nuclear strikes to achieve total destruction. The use of such weapons would have catastrophic humanitarian and environmental consequences.

They come in several sizes, can be as small as some hundred pounds.

A nuclear bomb can be made with any desired yield from about 10 tons to well over 50 megatons in one single bomb. These numbers are just for tested devices that worked, there is no theoretical upper limit on the yield of fusion based bombs.

A nuclear weapon is one of the most powerful weapons in existence, so it is difficult to say if there is a specific weapon that is definitively stronger. However, some may argue that certain future technologies, such as antimatter weapons or advanced cyber warfare capabilities, could potentially surpass the destructive power of a nuclear weapon.

I assume that you are referring to fallout.

It was only a tiny amount of the total fallout at Hiroshima, but as the mushroom cloud did enter the stratosphere some did travel around the world. Most of the fallout though probably fell back to earth in less than a couple hundred miles.

1. Stan Ulam & Edward Teller had invented a mechanism based on Radiation Implosion that finally made one practical in early 1950.
2. The USSR tested their first atomic bomb in 1949.
3. The start of the Korean war in 1950.
4. McCarthyism & the Red Scare.

During a nuclear explosion, seek shelter immediately in a sturdy building, away from windows, doors, and outside walls. Stay indoors until authorities provide further instructions, as this can help protect you from radiation exposure and fallout particles. If caught outside, find shelter in a dense building or lie flat on the ground and cover your head to reduce exposure.

because it is small is fusable and fissable.

Further answer

It's not used for all atom bombs. In fact the first ones weren't. Uranium and plutonium were the elements used. They were fissile, i.e. capable of sustaining a chain reaction when they split into other elements.

More recently hydrogen was used but this time is fuses to form another element (helium) with a very large release of energy.

Really, it would not look like much. In order for a nuclear weapon to produce a nuclear detonation, the sequence of actions must happen in a very precise manner. A mid air collision would be likely to damage both, with the result that no nuclear explosion would take place. The high explosive triggers might detonate, giving a fairly small bang, and scattering parts of the weapons, but no earth shattering kaboom (apologies to Bugs Bunny and Marvin the Martian)

To equal the energy output of the Sun in one second, you would need to detonate about 9.2 x 10^24 nuclear bombs. The Sun's energy output is equivalent to about 3.8 x 10^26 Watts.

We'll consider "dirty" to mean producing radioactive fallout.

Since hydrogen bombs (fusion bomb) require the energy from an atomic bomb (fission bomb) they are a little dirty. Its mostly the atomic bomb that creates dangerous isotopes that contaminate the blast area, and regions down-wind.

Now an H-bomb is generally "cleaner" than a bomb purposefully-design to create a large amount of dangerous, radioactive fallout. There are various techniques where one can change the type and duration of fallout. These types of weapons are generally use fission (not fusion) to create this effect.

Well first start of nuclear bombs has more common in physics that chemistry. Sense Chemistry is really assosiated with elemnts while the atom and it spliting is more assosiated with physics.

The answer is easy in order to produce an atomic bomb you need uranium or plutonium which is part of chemestry. The fission process is more physic related

Renewable energy sources like solar, wind, and hydropower can be sustainable alternatives to nuclear power. These sources produce electricity without greenhouse gas emissions and have the potential to provide a significant portion of our energy needs. However, the feasibility of each alternative depends on factors like location, infrastructure, and cost.

Polystyrene has many properties useful for this purpose.

It is solid, but contains a LOT of air, so it can hold components in placed without adding much weight.

Additionally, while holding components in place, it will also allow certain types of radiation to pass through it. This can be important in certain applications that channels radiation for other purposes.