What is the potential gradient (`in Vm^-1`) at a distance o `10^-12` m from the centre fo the platinum nucleus? What is the potential gradient at the surface of nucleus? Atomic number of platinum is 78 and the radius of platinum nucleus may be taken as `5 xx 10^-15` m.

Calculate the radius of oxygen nucleus .Given that R_0 = 1.1 xx 10^(-15) m .

What is the electric potential at the surface of an iron nucleus? The radius of the nucelus is 4.2 xx 10^-15 m and the atomic number is 26.

The electric potential at the surface of an atomic nucleus (Z=50) of radius 9.0 xx 10^-15 m is

Calculate the electric potential at the surface of a gold nucleus. Given radius of nucleus = 6.6 xx 10^-15 m and atomic wight of gold is 79.

As you have learnt in the text, a geostationary satellite orbits the earth at a height of nearly 36,000 km from the surface of the earth. What is the potential due to earth’s gravity at the site of this satellite ? (Take the potential energy at infinity to be zero). Mass of the earth = 6.0Xx10^24 kg , radius = 6400 km.

In the nucleus of _(92) U^(238) , two porotns at a distance of 6xx10^-1 m . Calculate their electrostatic potential energy.