Question

a component of nuclear fallout from atmospheric tests of nuclear bombs, falls to the ground 90, and crops. When ingested, it can replace calcium in cow's and mother's milk and can be into the bones of developing young animals and children. Strontium-90 decays by beta to yttrium-90 with a half-life of 29 years. (The energy release accompanying this beta decay can s a dust on grass gger leukemia in the bone marrow and other bone cancers.) (5 pts) Write the nuclear equation for the radioactive disintegration of Sr-90 (5 pts) How long will it take for a sample of strontium-90 that initially has an activity of 4.0x 10 integrations/min to decay to 2% of its original activity? pts) Evaluate the relative penetrating powers of the three major types of radioactive emission. Why is presence of Sr-90 WITHIN the bone potentially so damaging?

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Answer 1

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