Answer:
IT doesnt push down because the lawnmower has wheels and the ground is hard
Explanation:
Branliest
The beats are actually two new sounds.
Their frequencies are (the sum of the original two frequencies) and (the difference of the original two frequencies).
The existence of the beats is the result of the difference in the frequencies of the original two sounds. <em> (b)</em>
A mercury filled balloon would fall faster then water. Mercury is heavier.
