Uncertainty Principle Using ΔEΔt ≥ ħ/2: the Excited State of a Certain

question 86

Essay

Uncertainty principle using ΔEΔt ≥ ħ/2: The excited state of a certain atom is 3.2 eV ±0.21 eV. ( ħ = 1.055 × 10^-34 J ∙ s = 6.591 × 10^-16 eV ∙ s, 1 eV = 1.60 × 10^-19 J)
(a) What is the average lifetime of this state?
(b) If the excited energy were doubled to 6.4 eV ± 0.21 eV, how would the lifetime be affected?

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Definitions:

Split-half Reliability

A measure of consistency where a test is divided into two parts and an individual's scores on both halves are compared.

Test-retest Reliability

A measure of the consistency of a psychological test or assessment tool across time, assessing the stability of test scores on repeated applications.

Alternate Forms Reliability

The consistency of the results of two tests constructed in the same way from the same content domain, administered to the same participants.

Item-total Correlation

The correlation between scores on individual items and the total score on all items of a test or questionnaire.