In fact, it did on counting the human price against the dollar price.
It doesn't. The Manhattan Project cost $2 billion, but most of that was for infrastructure not bombs themselves. The 3 devices detonated in WW2 probably cost no more than $1 million each to make. Modern bombs probably cost much less than that. However actual cost figures are still classified.
There is no "nominal" atomic bomb, their yields can vary from less than 100 tons TNT equivalent to nearly 1 megaton TNT equivalent. Therefore there is no single meaningful answer to this question. Hydrogen bombs have no upper limit for yield!
It ended the war with less possible servicemembers lives lost.
If you consider the total cost of the Manhattan Project ($2,000,000,000) and divide that over the 4 atomic bombs built over WW2 (Trinity, Little Boy, Fatman, and one finished about the time Japan surrendered and thus not used); each bomb cost $500 million. However as most of the expenses on the Manhattan Project was for infrastructure (e.g. enrichment plants, reactors, plutonium reprocessing plants) that could be used to make more bombs, actual production and delivery costs for Little Boy was much less: probably well under $1 million.
An atomic bomb is any bomb that derives its energy from the atomic nucleus, it may do this by either the process of fission of heavy nuclei or the process of fusion of light nuclei. Atomic bombs can also be called nuclear bombs.I don't really understand what you mean by "make it less powerful". The US has made tactical atomic weapons with yields as low as 0.1KTon (100 tons TNT equivalent), however I don't know if they are still stockpiled (they are very inefficient and wasteful in their use of plutonium). For optimal efficiency in use of uranium or plutonium in pure fission atomic bombs, a yield of 200KTons to 400KTon is preferred, however I know no such bombs are still stockpiled as compact fusion bombs in this yield range and higher are both more efficient and much cheaper to build.
2 atomic bombs dropped on Hiroshima and Nagasaki
Japan was totally devastated and after the bombs, everything every thing became worse. Japan could not feed the people less rebuild the Nation.
That battle began on April 1, 1945 and ended June 21, 1945. The atomic bomb was dropped on August 6 1945 and the second was dropped the 9th. Okinawa was needed to be secure in order to drop the atomic bombs. The American naval forces assembled there were larger than those at Normandy in June, 1944, and more than 12,000 American and 100,000 Japanese soldiers sacrificed their lives.
There were a great many bombs dropped on Japan, mainly high explosive bombs, and incendiary bombs. The bomb used on Hiroshima was a atomic bomb holding 115 lbs of Uranium 235 (less than 1% of that was used in the explosion). The bomb dropped on Nagasaki was a Plutonium bomb, holding about 13.6 lbs of Plutonium. (about 20% of that was used up in the explosion)
Far less than were being killed every night at the same time due to the conventional firebombing raids.
Almost immediately following the end of World War II, Americans began to question the use of the atomic bomb and the circumstances surrounding the end of the Pacific War. More than half a century later, books and articles on the atomic bomb still provoke storms of debate among readers and the use of atomic weapons remains a sharply contested subject. As the 1995 controversy over the Enola Gay exhibit at the Smithsonian's National Air and Space Museum revealed, the issues connected with the dropping of the bombs on Hiroshima and Nagasaki continue to touch a sensitive nerve in Americans. Among scholars, disagreement remains no less heated. But, on the whole, this debate has been strangely parochial, centering almost exclusively on how the U.S. leadership made the decision to drop the bombs. There are two distinct gaps in this historiography. First, with regard to the atomic bombs, as Asada Sadao in Japan correctly observes, American historians have concentrated on the "motives" behind the use of atomic bombs, but "they have slighted the effects of the bomb." Second, although historians have been aware of the decisive influence of both the atomic bombs and the Soviet entry into the war, they have largely sidestepped the Soviet factor, relegating it to sideshow status. A series of counterfactual hypotheses can help clarify the question of which factor, the atomic bombs or Soviet entry into the war, had the more decisive effect on Japan's decision to surrender. We might ask, in particular, whether Japan would have surrendered before November 1, the scheduled date for the start of Operation Olympic, the U.S. invasion of Kyushu, given neither the atomic bombings of Hiroshima and Nagasaki nor Soviet entry into the war; Soviet entry alone, without the atomic bombings; or the atomic bombings alone, without Soviet entry.
The letter was less melodramatic than that. It said that Germany had the potential to conduct research on atomic weapons.