Considering the wavelengths of electron and proton to be equal,the ratio of their velocities (v_(e)/(v_(p) would be: (mass of electron =9.1times10^(-31)kg, mass of proton =1.67 times10^(-27)kg

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.

Calculate the ratio between the wavelength of an electron and a proton, if the proton is moving at half the velocity of the electron (mass of the proton =1.67xx10^(-27)kg , mass of the electron =9.11xx10^(-2)m .

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 .

The ratio of electrostatic and gravitational force acting between electron and proton separated by a distance 5 xx 10^(-11)m , will be (charge on electron = 1.6 xx 10^(-19)C , mass of electron = 9.1 xx 10^(-31) kg , mass of proton = 1.6 xx 10^(-27) kg, G = 6.7 xx 10^(-11) N - m^(2)//kg^(2) )

The mass of an electron is 9.11xx10^(-31)kg . How many elecrons would make 1kg?