Two pieces of flint rock produce a visible spark
when they are struck together. during this
process, mechanical energy is converted into
(1) nuclear energy and electromagnetic energy
(2) internal energy and nuclear energy
(3) electromagnetic energy and internal energy
(4) elastic potential energy and nuclear energy

the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force