Quarter Avoirdupois ounce (used for packaged food sold in the U.S. by weight): 7.087381 grams. Quarter Troy ounce (used for precious metals): 7.775869 grams. Quarter apothecaries ounce (no longer widely used): 7.775869 grams. Quarter ancient Roman ounce (no longer used): 6.792 grams. Quarter fluid ounce (used for liquid measure in U.S.): depends on the density. For example, cold water (39Â°F or 4Â°C), would be 7.393382 grams.
The United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945, during the final stage of the Second World War.The two bombings, which killed at least 129,000 people, remain the only use of nuclear weapons for warfare in history.merican President Harry S. Truman called for Japan's surrender 16 hours later, warning them to expect a rain of ruin from the air, the like of which has never been seen on this earth.. Three days later, on August 9, the U.S. dropped a plutonium implosion-type bomb (Fat Man) on the city of Nagasaki.
1 The US dropped the Atom Bomb on Hiroshima after the sneak attack on Pearl Harbor during WWII. 2  It was the first Atom Bomb to ever be used, and was not the last. 3  The second Atom Bomb was dropped on Nagasaki which was the final straw in ending WWII this day is called V-J Day (Victory over Japan Day).apan attacked the US Army and Navy bases on Pearl Harbor, Hawaii on December 7, 1941, starting a four year war in the Pacific. To end the war quickly President Harry S Truman â¦ approved dropping the two atomic bombs, code-named Little Boy and Fat Man on Hiroshima and Nagasaki, Japan.