Amaterial with a cubic unit cell is heated from room temperature to 900°c without melting during this time, the bragg peaks in the x-ray diffraction pattern are seen to increase in width. the 20 position of the peak decreases over the same temperature range. explain these a) observations on an atomic scale. (note the mark allocation, there are 2 observations that need separate explanations)

their crystal patterns have been disrupted by stress

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