Calculate the product of uncertain displacement and velocity for an electron of a `9.1 xx10^-31` kg according to Heisenberg's uncertainly principle. `(h = 6.6 xx10^(-24) kg m^2s^-1)`

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).

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 .

Calculate the de-Brogile wavelength for electron moving with speed of 6 xx10^5 ms^(-1) ?

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 .

Calculate the de-Broglie wavelength for electron moving with speed of 6 xx 10^5 m s^(-1) .

Obtain de-Broglie waveelngth of an electon of kinetic energy 150 eV.Given mass of electron, m=9.1 xx 10^(-31) kg ,charge on electron, e=1.6 xx 10^(-19) C and Planck's constant , h=6.62 xx 10^(-34) J s .

Find de-Brogile wavelength of wave associated with a particle of rest mass 9 xx10^(-31) kg and moving with a speed 1.5 xx 10^(8) ms^(-1) (h=6.6 xx 10^(-34) Js).

If the free electron density of copper is 8.6xx10^(28)m^(-3) and resistivity of copper at room temperature is 1.7xx10^(-6)Omega cm , find the relaxation time for the free electrons of copper. Given, mass of electron =9.1xx10^(-31) kg , and charge of electron =1.6xx10^(-19)C. Boltzmann's constant k = 1.38 xx 10^-23 J K^-1