At distances greater than 2 femtometers, the nuclear strong force is stronger than (select all that apply): gravity electromagnetic forces nuclear weak force none of the above

None of the above

Explanation:

As we know that radius of the nuclei is given as

so nuclear force between the nucleons exist only between the nucleons which present inside the nucleus.

Since nuclear force depends on the distance between the nucleons so here we can say that as the distance is more than this order of distance i.e. 1.75 fm then in that case the nuclear force is negligibly small and its magnitude is smaller than electromagnetic force and gravitational force both.

So we can say that for all distance range which is more than 2 fm the nuclear force is small or negligible.

So correct answer will be

None of the above

The correct answer is
nuclear weak force

In fact, the nuclear strong force has a very limited range of action (approximately below 1-2 femtometers), and its magnitude decays exponentially for larger distances. Only the nuclear weak force is weaker than the nuclear strong force at large distance, while the gravity and the electromagnetic force become dominant for distances > 2 femtometers.

Explanation:

potential energy =360800J

mass(m)=?

height (h)=25m

g=9.8m/s²

we have

potential energy =360800J

mgh=360800J

m×9.8×25=360800

m=360800/(9.8×25)=1472.653061kg