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9702/02/SP/22 · question 3 of 3 in this topic

Question 7

7(a)2 marks

A nucleus X decays by emitting a β⁺ particle to form a new nucleus, ²³₁₁Na.

State the number of protons and the number of neutrons in nucleus X.

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

Your answer

Suggested time: 3 min

7(b)1 mark

State one similarity between a β⁺ particle and a β⁻ particle.

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

Your answer

Suggested time: 2 min

7(c)1 mark

State the quark composition of a meson.

State A short answer. No explanation is needed, and adding one cannot earn extra marks.

Your answer

Suggested time: 2 min

7(d)2 marks

A hadron consists of two down quarks and a charm quark.

Determine the charge of the hadron. Show your working.

Show The result is given, so every step of the reasoning is what earns the marks.

Your answer

Suggested time: 3 min

9702/02/SP/22Cambridge International AS & A Level Physics 9702 · Specimen 2022 · Paper 2 · sit the whole paper