Question 31.16: A sample of an isotope for which λ = 0.10 s^−1 contains 5.0 ...

Cambridge International AS and A Level Physics Coursebook

A sample of an isotope for which $λ = 0.10 s^{−1}$ contains $5.0 × 10^{9}$ undecayed nuclei at the start of an experiment. Determine:

a the number of undecayed nuclei after 50 s

b its activity after 50 s.

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Question: 31.20

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a Decay constant

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Question: 31.2

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Question: 31.1

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a

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Question: 31.21

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Question: 31.19

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\fr...

Question: 31.18

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Question: 31.17

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Question: 31.15

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Verified Answer:

N = N_{0}  e^{–λt}

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Question: 31.WE.8

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Question: 31.WE.7

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Step 1 In this case, we have

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