Determine the mass of an electron if for an electron `e/m=1.759 xx 10^(8) Cg^(-1) and e=1.6021 xx 10^(-19)C`

An electron is constrained to move along the y- axis with a speed of 0.1 c (c is the speed of light) in the presence of electromagnetic wave, whose electric field is vec E = 30hat j sin (1.5 xx 10^7t - 5 xx 10^2x) V//m . The maximum magnetic force experienced by the electron will be : (given c = 3 xx 10^8 ms^(-1) and electron charge = 1.6 xx 10^(-19)C )

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) .

What is the radius of the path of an electron (mass 9 xx 10^(-31) kg and charge 1.6 xx 10^(-19)C) moving at a speed of 3 xx 10^(7)m//s in a magnetic field of 6 xx 10^(-4)T perpendicular to it? What is its frequency? Calculate its energy in keV.(1eV = 1.6 xx 10^(-19)J) .

An electron beam has a kinetic energy equal to 100 eV . Find its wavelength associated with a beam , if mass of electron = 9.1 xx 10^(-31) " kg and 1 eV " = 1.6 xx 10^(-19) J . (Planks's constant = 6.6 xx 10^(-34) J-s)

The mass of half mole of electrons is about (Given: Mass of electron =9.1 xx10^(-28) g)

Molar mass of electron is nearly : (N_(A) = 6 xx 10^(23)) , mass of e^(-) = 9.1 xx 10^(-31)Kg

At what speed should the electron revolve around the nucleus of a hydrogen atom in order that it may not be pulled into the nucleus by electrostatic attraction ? Take the radius of orbit of an electron as 0.5Å , the mass of the electron as 9.1xx10^(-31) kg and charge as 1.6xx10^(-19)C .

An electron is accelerated under a potential difference of 182 V. the maximum velocity of electron will be (Given, charge of an electron is 1.6xx10^(-19)C ms^(-1) and its mass is 9.1xx10^(-31)kg )

Determine the de Broglie wavelength of a proton, whose kinetice energy is equal to the rest of the mass energy of an electron. Given that the mass of an electron is 9xx10^(-31) kg and the mass of a proton is 1837 times as that of the electron.

An electron is accelerated under a potential difference of 64 V, the de-Brogile wavelength associated with electron is [e = -1.6 xx 10^(-19) C, m_(e) = 9.1 xx 10^(-31)kg, h = 6.623 xx 10^(-34) Js]