16. Which person will experience what happens to sounds due to the Doppler effect? Two friends riding
bicycles side-by-side and talking: a father pushing a laughing toddler on a swing: a boy sitting and
watching television; a girl running and listening to her radio through earphones.

Two models of the same compound are shown. in what way is model b better than model a? model b shows the types of elements in the compound, but model a does not. model b shows the three-dimensional shape of the molecule, but model a does not. model b shows how the atoms in the molecule are connected, but model a does not. model b shows the number of atoms of each element in the molecule, but model a does not