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Physics Additional (P2)Static Electricity
Uses:
ResistanceWhy do appliances heat up?
LDR and Thermistors
Voltage current graphs
Distance and velocity time graphs
If the line becomes negative, this means the object is returning to its start position
RadioactivityRadioisotopesA radioisotope is an unstable isotope (An atom of an element with the same number of protons but different a number neutrons e.g. C-12 and C-14). These radioisotopes eject matter from their nucleus in order to gain stability. There are 3 things that they can eject from their nucleus:
How do radiations ionise atoms?
Nuclear Fission and FusionFission
How fission can be controlled:
Fusion
Nuclear Power stations
Positives and negatives
Background Radiation
Half-lifeThe time taken for half of the undecayed radioisotopes in a sample to decay.
Half-life can be measured in Becquerels:
Carbon DatingCarbon dating uses half-life to work out the age of a fossil