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Strontium-90 has half-life of 28

In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones
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2. asked by jessica
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In the early 1960s, radioactive strontium-90 was released during atmospheric testing of nuclear weapons and got into the bones
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2. asked by Cratch
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The half-life for beta decay of strontium-90 is 28.8 years. A milk sample is found to contain 10.3 ppm strontium-90. How many
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2. asked by Mindy
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Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t,
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2. asked by Anonymous
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Suppose strontium-90 decays at a rate of 2 percent per year. (a) Write the fraction P of strontium remaining, as function of t,
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2. asked by Anonymous
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Suppose strontium-90 decays at a rate of 2 percent per year.(a) Write the fraction P of strontium remaining, as function of t,
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2. asked by Anonymous
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Strontium-90 decays through the emission of beta particles. It has a half-life of 29 years. How long does it take for 80% of a
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2. asked by Urgent Help
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Strontium-85, used for bone scans, has a half-life of 64 {\rm d}.How long will it take for the radiation level of strontium-85
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2. asked by Help!!
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Write the fraction Pof strontium remaining, as function of t , measured in years. (Assume that at time t=0 there is 100 %
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2. asked by Lexi
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Strontium-90 is a radioactive waste product from nuclear reactors. It has a half life of 29 years. How many years would it take
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2. asked by Rachel
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