Carbon-14 (614C^{14}_{6}\text{C}614C) is radioactive.
Name three types of nuclear radiation emitted from radioactive sources.
State which of these radiations:
(i) carries a positive charge,
(ii) is the most penetrating,
(iii) is the emitted particle in the decay
614C⟶714N+emitted particle ^{14}_{6}\text{C} \longrightarrow {}^{14}_{7}\text{N} + \text{emitted particle} 614C⟶714N+emitted particleCarbon-14 has a half-life of 5730 years5730\text{ years}5730 years.
A sample containing 4 × 1010 atoms of carbon-14 decays for 17,190 years17,190\text{ years}17,190 years.
(i) How many half-lives elapse in this time?
(ii) How many atoms decay in this time?
(iii) How many beta particles are emitted from the carbon-14 sample during this time?
484 exam-style questions on CIE IGCSE Physics 5.2 Radioactivity, covering 5.2.1 Background radiation and measuring count rate, 5.2.2a Alpha, beta and gamma emission, 5.2.2b Deflection and ionising effects of nuclear radiation, 5.2.3a Radioactive decay, 5.2.3b Effects of decay on the nucleus and decay equations, 5.2.4a Half-life, 5.2.4b Choosing isotopes for applications, and 5.2.5 Effects of ionising radiation and safety precautions. Each one has a worked solution and a mark scheme showing where the marks go.