In an `X-ray` machine an electron is subjected to a force of `10^(-23) N` In how much time will the electron a distance of `0.1m` ? Take mass of electron `=10^(-30)kg` .

If an electron is subjected to a force of 10^(-25) N is an X-ray machine, then find out the time taken by the electron to cover a distance of 0.2m. Take mass of the electron 10^(-30) kg.

If an electron is subjected to aforce of 10^(-25) N in an X-ray machine, then find out the time taken by the electron to cover a distance of 0.2 m. Take mass of the electron 10^(-30) kg.

A particle of mass 1mg has the same wavelength as an electron moving with a velocity of 3xx10^6 ms^(-1) . What is the velocity of the particle ? (Take mass of the electron =9xx10^(-31) 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) )

What is the number of electrons that would weight 1 kg? Mass of an electron is 9.11 xx 10^-31 kg .

In the Bohr model of the hydrogen atom an electron is pictured rotating in a circle (with a radius of 0.5xx10^(-10)m ) about the positive nucleus of the atom. The centripetal force is furnished by the electric attraction of the positive nucleus for the negative electron. How large is this force if the electron is moving with a speed of 2.3xx10^(6) m/s? (The mass of an electron is 9xx10^(-31)kg )