What is the ratio of the mass of an electron to the mass of a proton? 

The mass of an electron is ___part of the mass of a proton:

What are the charge and mass of an electron?

The mass of electron varies with

The mass of electron is 1836 times that of proton.

What is the mass of one mole electrons in kg?

Ratio of masses of proton and electron is

Coulomb's law for electrostatic force between two point charges and Newton's law for gravitational force between two stationary point masses, both have inverse-square dependence on the distance between the charges/masses. Compare the strength of these forces by determining the ratio of their magnitudes (i) for an electron and a proton and (ii) for two protons

Energy equal to the mass of one electron is