# Half-life: Quiz

Question 1: Instead, the half-life is defined in terms of ________.
StatisticsFrequency probabilityProbabilityRandom variable

Question 2: The converse of half-life is ________.
Doubling timeExponential growthCompound interestNatural logarithm

Question 3: Next, we'll take the ________ of each of these quantities.
Leonhard EulerEuler's formulaExponential functionNatural logarithm

Question 4: The current flowing through an ________ or RL circuit decays with a half-life of RCln(2) or ln(2)L / R, respectively.
RLC circuitLC circuitRC circuitElectronic filter

Question 5: For a general introduction and description of exponential decay, see the article ________.

Question 6: λ is a positive number called the ________ of the decaying quantity.

Question 7: For a general introduction and description of non-exponential decay, see the article ________.
CatalysisChemical kineticsRate equationElementary reaction

Question 8: In this case, the ________ ensures that the number of atoms that actually decay is essentially equal to the number of atoms that are expected to decay.
Characteristic function (probability theory)Multivariate normal distributionNormal distributionCentral limit theorem

Question 9: In ________, the half-life is the length of time after which there is a 50% chance that an atom will have undergone nuclear decay.

Question 10: Half-lives are very often used to describe quantities undergoing exponential decay—for example radioactive decay—where the half-life is constant over the whole life of the decay, and is a ________ (a natural unit of scale) for the exponential decay equation.
Dimensional analysisDimensionless quantityHarmonic oscillatorNondimensionalization