A molecule of hydrogen contains two protons and two electrons. The nuclear force between these two protons is always neglected while discussing the behaviour of a hydrogen molecule. Why?

Electric force between two protons is ...... times greater than gravitational force.

A proton is 1836 times heavier than an electron. If the repulsive force between two protons is F for given distance, then the electric force between two electrons at same distance will be.........N.

There are two identical small holes on the opposite sides of a tank containing a liquid. The tank is open at the top. The difference in height between the two holes is h . As the liquid comes out of the two holes. The tank will experience a net horizontal force proportional to. .

An ionised H-molecule consists of an electron and two protons. The protons are separated by a small distance of the order of angstrom In the ground state

Columb law for electrostatic force between two point charges and newton law for gravitational force between two the distance between the charges and masses respectively (a) compare the strength of these forces by determining the ratio of their magnitudes (i) for an electron and a proton and (ii) for two protons (b) estimate the acceleratons of electron and proton due to the electrical force oftheir mutual attarction when they are 1A (=10^(-10) m) a part (m_(p)=1.67xx10^(27) kg m_(e )=9.11xx10^(-31) kg)