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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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