A neutron has a mass of 1.67 × 10^?27 kg. The de Broglie wavelength is 1.4 × 10^?10 m. How fast is the neutron going? (in m/s)
a. 3.4 × 10^3
b. 2.8 × 10^3
c. 3.9 × 10^3
d. 2.6 × 10^3
e. 1.7 × 10^3
b
Physics & Space Science
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