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17-11-2020
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What causes radioactive material to spread to areas unaffected by a nuclear blast?

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FatimaAlhaddad FatimaAlhaddad

17-11-2020

Answer:

Seven hours after a nuclear explosion, residual radioactivity will have decreased to about 10 percent of its amount at 1 hour, and after another 48 hours it will have decreased to 1 percent.

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