Little Boy.
August 1945 A bit more information. Aug 6 for Hiroshima and Aug 9 for Nagasaki.
bohr
Because they were not about to give up before we atom bombed them! The next step would have been to invade the main islands of Japan. Many more would have died on both sides if that had happened. This is not mere speculation! It was well researched in advance. The atom bomb ended WWII. I remember it from when I was 8 years old.
After the Japanese had bombed Pearl Harbor, the Allies bombed Japanese cities including Tokyo. In 1943, the Allies won the Battle of Midway. Shortly after joining WWII (1942) the US started a top secret project known as the Manhattan Project. Led by American scientist J. Oppenheimer, the team worked for 3 years to build an atomic bomb. After officials successfully tested the bomb, they told the Japanese to surrender, or they would face destruction. The Japanese refused to give in. On August 6, 1945, The B-29 bomber 'Enola Gay' dropped an atomic bomb on the city of Hiroshima. They still didn't surrender so another atomic bomb was dropped. On August 14, Japan surrendered. Long story short, the Japanese wouldn't surrender so they dropped the atomic bomb. The Japanese still didn't surrender so they dropped another atomic bomb killing more people and they finally surrendered on August 14.
Because they wanted the Japanese to give up, but they didn't even though Germany had so they bombed Hiroshima.
Because America dropped a nuclear bomb on them
August 1945 A bit more information. Aug 6 for Hiroshima and Aug 9 for Nagasaki.
Too many variables to give a simple answer- depends on the bomb, and how it is used- surface burst, high air burst, etc. In the best situation, a few weeks. You might note that the only two cities to ever have been atom bombed- Hiroshima and Nagasaki, both have people living and working there.
That's the easiest question ever... Of course the Atomic bombs were dropped, ending the war with Japan. But some argue the second bomb wasn't needed. America didn't give Japan a chance to surrender after the first bomb, because the second was dropped within days of the first.
bohr
Because they were not about to give up before we atom bombed them! The next step would have been to invade the main islands of Japan. Many more would have died on both sides if that had happened. This is not mere speculation! It was well researched in advance. The atom bomb ended WWII. I remember it from when I was 8 years old.
In the related links box below I posted a picture before and one after the bomb.
The two dropped on Japan in WW2 dropped from above 30000 feet above sea level where the B-29s flew to about 1500 feet above ground level where their RADAR altimeters triggered detonation. At least 28500 feet give or take.
1. Japan didn't give up easy. 2. US were eger to test their newly developed A-Bomb and to be a world leader.
After the Japanese had bombed Pearl Harbor, the Allies bombed Japanese cities including Tokyo. In 1943, the Allies won the Battle of Midway. Shortly after joining WWII (1942) the US started a top secret project known as the Manhattan Project. Led by American scientist J. Oppenheimer, the team worked for 3 years to build an atomic bomb. After officials successfully tested the bomb, they told the Japanese to surrender, or they would face destruction. The Japanese refused to give in. On August 6, 1945, The B-29 bomber 'Enola Gay' dropped an atomic bomb on the city of Hiroshima. They still didn't surrender so another atomic bomb was dropped. On August 14, Japan surrendered. Long story short, the Japanese wouldn't surrender so they dropped the atomic bomb. The Japanese still didn't surrender so they dropped another atomic bomb killing more people and they finally surrendered on August 14.
Japan would not give up with out the use of atomic weapons.
The U.S. wanted to prevent Germany from becoming the first country to build an atomic bomb which would give Germany formative power. General Leslie R. Groves was put in charge of The Manhattan Project to develop the bomb, and scientists use theories about nuclear fission to construct bombs with the elements of Uranium-235 and Plutonium-239. The first successful bomb was code-named "Trinity," and it exploded on July 16, 1945. Less than a month later, the United States dropped the bomb Little Boy on Hiroshima.