Is my answer right?
which of the following is a reasonable ground-state electron configuration?
1s22s22p43s2
1s21p62s22p6
1s22s22p63s23p64s24d10
1s22s22p63s23p64s23d5< my answer, is this right?

a: 45.9 meters

b: 4.29 seconds

step-by-step explanation:

a: h(t)=1/2(-9.8)(3)^2+0(3)+90

h(t)=-4.9(3)^2+90

h(t)=-44.1+90

h(t)=45.9 meters

b: 0=1/2(-9.8)(t^2)+0t+90

0=-4.9t^2+90

-90=-4.9t^2

18.37=t^2

t=4.29 seconds

in the second question, the numbers aren't exact, but they're a close approximation.

the answer is   c.) 1575 j.

explanation: