Physics (AS & A Level) · Oct / Nov 2021 · Paper 22 · Question 7
9702
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A stationary nucleus P of mass 243 u decays by emitting an α-particle of mass 4 u to form a different nucleus Q, as illustrated in Fig. 7.1. nucleus Q 1.6 × 107 m s–1 α-particle mass 4 u nucleus P mass 243 u BEFORE DECAY AFTER DECAY v Fig. 7.1 The initial speed of the α-particle is 1.6 × 107 m s–1.
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7(a)[2]
7(b)[2]
7(c)[3]
7(d)(i)[2]
7(d)(ii)[1]
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