Physics (AS & A Level) · May / June 2023 · Paper 41 · Question 9
9702
As printed in the paper
The question as text
Carbon-11 is radioactive and decays by β+ emission to form boron-11. Carbon-11 has a half-life of 20 minutes. Boron-11 is stable.
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Show the answer and mark scheme
9(a)[1]
9(b)[3]
9(c)(i)[2]
9(c)(ii)[3]
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