How long will the building be uninhabitable

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Reference no: EM13981029

Suppose a terrorist explodes a ''dirty'' explosive device, a bomb to which is attached radioactive materials, inside a building. lf the 'dirty' material is 2.0 kg block of Strontium -90 (⁹⁰₃₈ Sr, atomic mass 89.9077, half-life of 28.8 years), the Strontium -90 particles would then be scattered throughout the building in the explosion. If the safe intensity for radioactive levels is less than 10 counts/mm, how long will the building be uninhabitable?

Reference no: EM13981029

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