IB Physics Glossary
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Radioactive decay law
is a fluctuating error often present in experiments. It is linked to precision: imprecise data => "high" random error; precise data => "low" random error. Repeated measurements do reduce random errors. Sources of random errors can include varying reading/human error and other randomly flucuating factors which cannot be controlled during experiments.
occurs when an object is forced to vibrate at its natural frequency with a very large increase in amplitude. (d)
Resonance is the opposite to damping.
If external driving frequency, f, equals to the natural frequency, f0, then
f = f0 or f/f0 = 1, and resonance occurs.
Notice the resonance amplitude decreases with damping, and the natural frequency decreases.
rms voltage or current