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Introductory Physics Homework Help
How do you derive the units for momentum for photons
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[QUOTE="TheCelt, post: 6394899, member: 649603"] [B]Homework Statement:[/B] Units for photon momentum confuse me [B]Relevant Equations:[/B] p=hf/c = E/c So if i have a photon of some energy and i want to find the magnitude of the momentum, i can get the right answer but the units don't make sense. So i derive p = E/c since i know the energy of the photon and i used f=E/h and substituted this into p=hf/c This means for units of the equation p = E/c i get: kg m/s = J / (m/s) = J s/m This is confusing me since I've always been told to check my units but these equations don't have the same units, so I don't know if i have done something wrong, or momentum has different units applied for photons? Hope some one can explain what's going on here with the units. Thanks [/QUOTE]
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Introductory Physics Homework Help
How do you derive the units for momentum for photons
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