How many miles did the explosion on Hiroshima travel?

In my history text book it says that Canberra was made to be fair and such but there is a question Why were Sydney and Melbourne unsuitable capital cities of Australia and I cant find it anywhere? Is mahatma gandhi an explorer? What did cabeza de vaca traded? What was Patrick Henry professional experience? When did martin Luther king jr enter theological seminary? Who was Jacques Necker and why was he important to the French Revolution? What countries were invaded by Germany in World War 2 and when? What was the crop that people arriving in the colonies wanted to grow? What kind of cannons were used in the Alamo? What are some Cree customs and traditions? What is the largest poisonous snake in the world? What was the role of superpowers In Afghanistan war? How did Greek and roman cultures blend with the cultures of the middle east? When did the middle class begin? All of the major industrial centers of the soviet union are located in the? When did England first become a world power? What impact did Shay's Rebellion have on the US government? What are the differences between Islamic ancient culture and today? When did Germany start shipping Jew to Auschwitz? Why was Louis Pasteur's germ theory so important?