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11. Particle physics
A section of Physics, 9702
Listing 10 of 264 questions
In the following list, underline all the particles that are not fundamental. antineutrino baryon nucleon positron A nucleus of thorium‑230 (230 90Th) decays in stages, by emitting α‑particles and β– particles, to form a nucleus of lead‑206 (206 82Pb). Determine the total number of α‑particles and the total number of β– particles that are emitted during the sequence of decays that form the nucleus of lead‑206 from the nucleus of thorium‑230. number of α‑particles = number of β– particles = A meson has a charge of –1e, where e is the elementary charge. The quark composition of the meson includes a charm antiquark. State and explain a possible flavour of the other quark in the meson.
9702_w23_qp_22
THEORY
2023
Paper 2, Variant 2
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Questions Discovered
264