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A 20 kiloton nuke is relatively the same size as the "Fat Man" bomb that was dropped on Nagasaki in World War II. The effects of nuclear weapons vary on several factors such as terrain, environment, climate, weather patterns, blast size, blast brightness, seismographic data, and the strength of the shock wave, etc. as these all change and vary. There are several complex theoretical formula's to calculate this. I would say the estimation would be 15 miles with varying degrees of damage from the center outwards.

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Q: How many miles would a 20 kiloton nuke destroy?
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How many kilograms in a kiloton?

1 000 000 - one million kgs in a kiloton


How many tons are there in a kiloton?

1000 tons


How many square miles can a atomic bomb destroy?

An atomic bomb can approximately destroy 100 square miles.


How many pounds in 1000 kilotons?

2,000,000 pounds A kiloton is 2000000 pounds I think kilo means 1000 and there are 2000 pounds in a ton so just do the math 1000x2000 and you should have your pounds. CORRECTION!!!!!!!!!!!!! there are exactly 41,887,829.815127 pounds in 1 kiloton. That's roughly 42 million. NO! NO NO Well to be honest 1 metric ton is 1000 kilos witch is 2204lbs 1 kiloton is 1000 metric tons so 1 kiloton is 2.204 million lbs so 10 kilotons is 22.04 million lbs give or take a buick


How much plutonium in a 1 kiloton bomb?

This is hard to compute. The 22 kiloton MK-III Fatman had 6.2 kilograms but of this only a little over 700 grams fissioned. For 1 kiloton you would need roughly 33 grams to fission. But how much more you would need to get the bomb to work reliably depends on too many tricky design details (most classified) to tell. Assuming the same material efficiency as the MK-III, a total of roughly 282 grams would be needed. However this amount is so far below criticality that a superefficient implosion assembly system would be required as well as gas boosting to get that small a yield.I would guess, without access to classified information, that a basic pure fission 1 kiloton bomb would need between 2.5 kilogram to 5 kilogram of plutonium to fission the roughly 33 grams needed for that yield.Material efficiency becomes real bad below about about 10 kilotons unless gas boosting is used. Even the MK-IIIs material efficiency of about 10% is low by today's standards, but the figure is still a good starting point, especially as it is not classified.