The graph shows all of the stable isotopes of elements according to the numbers of protons and neutrons in their nuclei.

because growing process had stoped after 4-5 year

we're given that v₀ = 0 and a = 5.4 m/s². therefore, since v = at + v₀ for constant acceleration the equation for velocity is

after 28s,

m/s

which i would round to 150 m/s as my final answer

snell's law

refractve index = sin incidence / sin refraction