Q10. The table shows the electron structures of four elements. element electronic structure W 2,6 X 2,8 Y 2,8,1 Z 2, 8,7 Which pair of atoms will form a covalent substance? A) two atoms of W B) two atoms of X
C) An atom of W and an atom of X
D) An atom of Y and an atom of Z

A. Two atoms of W

Explanation:

Oxygen (O2)

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.

b

explanation:

mitosis