A Proton Has a Speed of 7

question 61

Multiple Choice

A proton has a speed of 7.2 × 10⁴ m/s.The energy of a photon that has the same de Broglie wavelength as the proton is closest to:

• A)230 keV
• B)150 keV
• C)300 keV
• D)370 keV
• E)440 keV

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