Question

Give the mass of an electrons and a proton one or two sentence

Answer 1

Protons and neutrons have nearly the same mass while electrons are much less massive. If we assume that a neutron has a mass of 1, then the relative masses are: Neutron = 1. Proton = 0.99862349. Electron = 0.00054386734.It is possible to use an electric field perpendicular to a magnetic field in order to measure the mass of an electron knowing that the electronic charge is e = �1.6x10-19 C. The difficult variable to measure in equation (1) is v, the (magnitude of) the velocity of the electron.

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