Answer:
b
Explanation:
imagine urself on an elevator dont you feel lighter
Answer:
take daily showers . eat vegies .sanitize your hands
Atomic number 1,symbol H,name hydrogen
Answer:
4.4721m
Explanation:
#Use Pythagorean theorem to find the distance between the two speakers:

There are antinodes 1/4,1/2 and 3/4 of the distance between speakers.
The greatest antinode is 3/4-1/4=1/2
#Distance between consecutive antinodes is:

Hence, the maximum possible wavelength of the sound waves is 4.4721m