Calculate the energy in MeV equivalent to the rest mass of an electron . Given that the rest mass of an electron , `m=9.1 xx 10^(-31) kg`, `1MeV = 1.6 xx 10^(-13) J` and speed of light , `c= 3 xx 10 ^(8) ms ^(-1)`.

Find the energy equivalent of the mass of an electron . Given mass of electron =9xx10^(-31) kg.

What is the amount of charge possessed by 1 kg of electrons? Given that mass of an electron is 9.1 xx 10^31 kg .

What is the de Broglie wavelength related to an electron of energy 100 eV ? (Given, mass of electron, m = 9.1 xx 10^(-31) kg, " " e = 1.6 xx 10^(-19) C and h = 6.63 xx 10^(-34) J.s )

Calculate the change in mass of an object if 800 electrons are given to it Given: Mass of an electron is 9.1xx10^(-31) kg .

Calculate the de-Broglie waveelngth of an electron of energy 400 eV.Given,lanck's constant = 6.6 xx 10^(-34) J s, mass of electron = 9.1 xx 10^(31) kg,1 eV = 1.6 xx 10^(-19) J .

Calculate the de Broglie wavelength of an electron moving with a velocity of 0.3c. Rest mass of an electron is 9.1xx10^(-31)kg.

Determine the de-Broglie wavelength of a proton, whose kinetic energy is equal to the rest mass energy of an electron. Given that the mass of an electron is 9.1 xx 10^(-31) kg and the mass of a proton is 1,837 times as that of the electron.

Find de-Broglie wavelength associated with an electrons moving with velocity 0.6 C. Given, rest mass of electron = 9.1 xx 10^-31 kg , h=6.63 xx 10^-34 Js .