I have been instructed to calculate the de Broglie wavelength of a proton moving at 1) 2 x 10^4 m/s and 2) 2 x 10^7 m/s(adsbygoogle = window.adsbygoogle || []).push({});

For the first velocity, the particle is not relativistic, but for the second velocity the particle is.

can someone explain to me what makes velocity 2 relativistic?

thanks.

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# Homework Help: De Broglie wavelength question

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