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This is modern physics, not classical physics.

An electron and a proton are each accelerated starting from rest through a potential difference of 49.0million volts. Find the momentum (in MeV/c) and the kinetic energy (in MeV) of each, and compare with the results of using the classical formulas. (Give your answers to at least four significant figures.)

	Momentum (MeV/c)
	relativistic	classical
electron
proton

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