If the sound is moving than the pitch will blank to the observer

corrrectooo

it has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helpedit has 2 cells

hope this helped

sodium i think the chemical element of atomic number 11, a soft silver-white reactive metal of the alkali metal group.

you click your profile picture in the top right corner and it says edit profile.