Suppose You Wanted to Hold Up an Electron Against the Gravitational

question 73

Multiple Choice

Suppose you wanted to hold up an electron against the gravitational force by the attraction of a fixed proton some distance above it.How far above the electron would the proton have to be? (k = 1/4πε₀ = 9.0 × 10⁹ N ∙ m²/C²,e = 1.6 × 10^-19 C,m_proton = 1.67 × 10^-27 kg,m_electron = 9.11 × 10^-31 kg)

• A)1.5 m
• B)2.3 m
• C)3.7 m
• D)4.6 m
• E)5.1 m

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