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What is the energy of a photon with a frequency of 3.17x10¹1 Hz?4.78x1044J2.09x10-45J2.10x10-22J2.09x10-23J

User Gondo
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1 Answer

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The energy of a proton is given by:


E=hf

where h is Planck's constant and f is the frequency. In this case the frequency is given, plugging the values we have:


\begin{gathered} E=(6.6262*10^(-34))(3.17*10^(11)) \\ E=2.10*10^(-22) \end{gathered}

Therefore, the energy is:


E=2.10*10^(-22)\text{ J}

User Kamal Kant
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