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Find the energy of the following. Express your answers in units of electron volts, noting that...

Find the energy of the following. Express your answers in units of electron volts, noting that 1 eV = 1.60 10-19 J. (a) a photon having a frequency of 4.20 1017 Hz eV (b) a photon having a wavelength of 6.20 102 nm eV

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