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A free electron in a gas is struck by a 5.95 nm X-ray, which experiences an increase in wavelength of 1.97 pm. How fast is the electron moving after the interaction with the X-ray?
(in m/s)
A: 1.079x10 OB: 1.220x10 Oc: 1.378x10 OD: 1.558x105 OE: 1.760x105 OF: 1.989x105 OG: 2.247x105 OH: 2.540x105
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