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What is the energy in joules of an x-ray photon with wavelength 8.40*10e-10 m?

(b) Convert the energy to electron volts.

  • physics -

    b. An electron volt? That is the charge on one electron (in C)times one volt..

    a Volt-Coulomb is a Joule

    a) energy= planck's constant*freq
    where freq= speedlight/wavelength

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