A Measurement of an Electron's Speed Is 2

question 10

Multiple Choice

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? ( = 1.055 × 10^-34 J ∙ s, ^mel = 9.11 × 10^-31 kg)

• A) 0.15 nm
• B) 0.29 nm
• C) 0.44 nm
• D) 0.60 nm
• E) 0.80 nm

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