A Neutron Has a Mass of 1

question 46

Multiple Choice

A neutron has a mass of 1.67 × 10−²⁷ kg. Its de Broglie wavelength is 1.4 × 10−¹⁰ m. What is its kinetic energy (in eV) ?

• A) 4
• B) 0.4
• C) 0.04
• D) 40
• E) 0.08

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