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Your question could be taken one of two different ways.
Are you asking about the physical size? Ten feet long, and five feet diameter (the largest that could fit in a B-29 bomb bay).
Or are you asking about the POWER of the bombs?
Equal to many TONS of TNT explosive. The largest man-made explosion up till that time, in world history.
The most common meaning of your question is the size of the explosion that they caused.
The Little Boy bomb dropped on Hiroshima had a nominal yield of about 18 kilotons of TNT (equal to 18,000 tons of TNT explosive).
The Fat Man bomb dropped on Nagasaki had a nominal yield of about 21 kilotons.
The USA dropped thouands of bombs on mainland Japan and its outlying islands. These mostly consisted of normal ordinance, but later a firebombing strategy was used, resulting in widespeard destruction of more than 60 cities in Japan. The bombs also included the only two nuclear weapons ever used in an act of war, through the destruction of Hiroshima and Nagasaki.
They have been built in sizes from smaller than an 11 inch diameter sphere to as big as an 80 foot tall by 20 foot diameter cylinder. Almost any size is possible, depending mostly on purpose.
The actual atomic bomb was 3 meters in length and 0.7 meters in diameter. It weighed 4 tons. The atomic cloud reached an altitude of 17 000 meters.
Little boy was a uranium-based nuclear bomb which exploded with energy between 13 and 18 kilotons of TNT.
The MK-I Little Boy atomic bomb was 10 feet long, 28 inches in diameter, and weighed 9700 pounds.
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Date of bomb dropping on hiroshima?
The Atom bomb was dropped on Hiroshima in 1945
What bomb was craeted in the Manhattan Project?
The atom bomb - which was then used on Hiroshima and Nagasaki in Japan.
Is fission what took place in the atom bomb dropped on Hiroshima?
Yes.
How many of them die in hiroshima atom bomb blast?
90,000-166,000
What did the radioactive material used to fuel the atom bomb that fell on Hiroshima?
The bomb which was dropped over Hiroshima on August 6th 1945 was filled with Uranium-235.
Date of bomb dropping on hiroshima?
The Atom bomb was dropped on Hiroshima in 1945
Which atom bomb did they drop on hiroshima?
"Little Boy"
What bomb was craeted in the Manhattan Project?
The atom bomb - which was then used on Hiroshima and Nagasaki in Japan.
Which atom bomb got dropped first?
The uranium fission bomb over Hiroshima.
How large was the atom bomb at hiroshima?
Almost 10 ft.
What city in japan that was destroyed by an atom bomb?
Hiroshima and Nagasaki
Did you drop a atom bomb on hiroshima?
If you mean the US, yes.
When did the atom bomb drop on hiroshima?
august 6 1945.
On which Japanese city was the atom bomb dropped?
Nagasaki and Hiroshima
What happened to Hiroshima in 1945?
It was hit with an American atom bomb.
What country was blown up in China by an atom bomb?
hiroshima
Who was the Japanese Emperor when atom bomb dropped in Hiroshima?
Hirohito
