Uncertainty Principle Using ΔEΔt ≥ ħ/2: the Energy of an Electron

question 25

Multiple Choice

Uncertainty principle using ΔEΔt ≥ ħ/2: The energy of an electron state has an uncertainty of 0.500 eV. What is the minimum uncertainty in the lifetime of the level? (ħ = 1.055 × 10^-34 J ∙ s = 6.591 × 10^-16 eV ∙ s, 1 eV = 1.60 × 10^-19 J)

• A) 6.59 × 10^-16 s
• B) 4.14 × 10^-15 s
• C) 6.59 × 10^-12 s
• D) 4.14 × 10^-11 s
• E) 6.59 × 10^-9 s

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Definitions:

Maslow's Hierarchy

A theory in psychology proposed by Abraham Maslow, suggesting that people are motivated by five basic categories of needs: physiological, safety, love/belonging, esteem, and self-actualization, which they seek in a pre-determined order.

Physiological

Pertaining to the branch of biology that deals with the normal functions of living organisms and their parts, including the physical and chemical processes involved.

Self-Actualisation

The achievement of realizing one's abilities and potential, viewed as an innate motivation or necessity in all individuals.

Deficit Principle

A concept indicating that the less frequently a reward is available or the less a need is satisfied, the more value or desirability that reward or satisfaction of the need has.