Depends on:
A nuclear missile launched from Cuba could reach Saginaw, Michigan, in approximately 10 to 15 minutes, depending on the specific type of missile and its trajectory. The distance from Cuba to Saginaw is about 1,100 miles, and modern intercontinental ballistic missiles (ICBMs) travel at speeds exceeding 3,000 miles per hour. Therefore, the time frame for such a missile to cover that distance would be relatively short.
Missiles don't generally "go around the earth." A missile is an object shot by someone at someone else. If you're asking how long it might take for a missile to travel to a target -- e.g. from the former Soviet Union to the United States -- the answer is roughly half an hour. That estimate could go up or down, depending on source and target locations. If you're asking how long it might take for a space vehicle to complete an orbit of the earth, that depends too on a number of variables. As an example, a vehicle at an altitude of 200 miles and traveling at 17,000 mph relative to the earth's surface would complete one orbit in about 98 minutes.
Take a rocket and put a nuclear warhead/bomb in its payload, instead of a satellite or humans. This produces a nuclear ICBM.Shorter range rockets or unmanned jets aircraft called cruise missiles can also be used.
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The explosion will only take up a square mile or two. The shockwave, will spread and destroy for several more miles. The real destruction is the nuclear fallout. Tons of radioactive matieral being scatered by the wind can spread hundreds of miles.
Jornado del Meurto (inside the Whitesands Missile Range) on July 16, 1945. The Trinity test.
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how long did it take to travel to the territory of Utah to St. Louis
We still not a nuclear country
nuclear fusion reaction
It depends on your means of travel. It would take a long time to walk and a very long time to roll.
Not long if you are in Cambodia and have a passport.