Uncertainty Principle Using ΔXΔp ≥ ħ: a Measurement of an Electron's

question 28

Multiple Choice

Uncertainty principle using ΔxΔp ≥ ħ: A measurement of an electron's speed is 2.0 × 10⁶ m/s and has an uncertainty of 10%. What is the minimum uncertainty in its position? (ħ = 1.055 × 10^-34 J ∙ s, m_el = 9.11 × 10^-31 kg)

• A) 0.29 nm
• B) 0.58 nm
• C) 0.87 nm
• D) 1.2 nm
• E) 1.6 nm

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Definitions:

Current Ratio

A liquidity ratio that measures a company's ability to pay short-term obligations with its current assets relative to its current liabilities.

Numerator

The top number in a fraction or ratio that represents the part of the whole being considered.

Denominator

In mathematics, the denominator is the bottom part of a fraction that indicates how many equal parts the whole is divided into.

Working Capital Ratio

A liquidity ratio that measures a company's ability to pay off its current liabilities with its current assets.