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A nuclear power plant that was started in 1971 produces p (t) = 1 + αt...

A nuclear power plant that was started in 1971 produces p (t) = 1 + αt kg Strontium-90 per year where t is the number of years since its inception. How much Strontium-90 produced from the start was left in 1992? Radioactive decay is described by n (t) = n0e^ (−kt), the half-life of Strontium-90 is 28 years and α = 1/10.

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