A Proton Has a Speed of 7

question 30

Multiple Choice

A proton has a speed of 7.2 x
M/s.What is the energy of a photon that has the same wavelength as the de Broglie wavelength of this proton? (m_electron = 9.11 × 10^-31 kg,c = 3.00 × 10⁸ m/s,h = 6.626 × 10^-34 J ∙ s)

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

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