How does n relate to the number of electrons allowed per main energy level

2n²

Explanation:

the number of electrons in energy level is given by 2n² where n is the energy level.

for n=1 the number of electron will be

2(1)²= 2 electrons

For n=2 the number of electrons will be 2(2)²= 2*4=8

For n=3 the number of electrons will be 2(3)²= 2*9=18

and so on.

the number of electrons can be calculated using 2n² where n is the number of shells

nth shell can in principle hold up to 2(n²) electrons.

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