Physics (AS & A Level) · May / June 2016 · Paper 21 · Question 7
9702
As printed in the paper
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7(a)[1]
hadron: neutron/proton and lepton: electron/(electron) neutrino [1]
(allow other correct particles)
7(b)(i)[1]
proton: up up down or uud [1]
7(b)(ii)[1]
neutron: up down down or udd [1]
7(c)(i)[1]
neutron → proton + electron + (electron) antineutrino [1]
7(c)(ii)[1]
up down down (quarks) change to up up down (quarks) or down (quark) changes to up (quark) [1]
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