If a particle has a total energy that is 5.00 times its rest energy, the speed of the particle is closest to which one of the following values?

A) 0.998c B) 0.980c C) 0.950c D) 0.985c E) 0.990c


B

Physics & Space Science

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Energy Levels: The shortest wavelength of a photon that can be emitted by a hydrogen atom, for which the initial state is n = 12, is closest to which one of the following values? (c = 3.0 × 108 m/s, h = 6.626 × 10-34 J ? s, 1 eV = 1.60 × 10-19 J)

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