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Physics, 17.07.2019 20:20 allisonchorath6971

Acertain sample of a radioactive material decays at a rate of 213 per second at t = 0. at t =20 minutes, the counting rate has fallen to 123per second. (a)what is the half-life of the sample? (b)what is its decay constant? (c)what will be the decay rate at t =105 minutes?

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Acertain sample of a radioactive material decays at a rate of 213 per second at t = 0. at t =20 minu...
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