Calculate the equivalent energy of electrons and proton at rest. Given that mass of electron `=9.1xx10^(-31)kg` and mass of proton `=1.673xx10^(-27)kg`.

Calculate the De-Brogile wavelength of an electron and proton if their 10^5 m//s given mass of electron is 9.1 xx 10^(-31) kg (kilogram). Mass of proton 1.67 xx 10^(-27) kg . Plank.s constant h=6.625 xx 10^(-34) JS (Joule Second).

Calculate the de-Bronglie waveelngth for electron and protonif their speed is 10^5 m s^(-1) .Given,mass of an electron =9.1 xx 10^(-31) kg ,mass of proton = 1.67 xx 10^(-27) kg and Planck's constant = 6.62 xx 10^(-34) J s .

A free electron and a free proton are placed in an uniform electric field. Compare their acceleration and the force acting on them. [Rest mass of electron =9.1xx10^(-31)kg and rest mass of proton =1.67xx10^(-27kg ]

An electron and a proton are detected in a cosmic ray experiment, the first with kinetic energy 10 keV and second with 100keV. Which is faster, the electron or proton ? Obtain the ratio of their speeds. Take mass of electron 9.11xx10^(-31)kg . Mass of proton =1.67xx10^(-27)kg and 1eV=1.6xx10^(-19)J.

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