Which is a correct way to measure wavelength?
a. from rarefaction to rarefaction for a longitudinal wave
b. from crest to trough for a transverse wave
c. from rest position to crest for a transverse wave
d. from compression to rarefaction for a longitudinal wave

the answer is a.) form rarefaction to rarefaction for a longitudinal wave because the particles in a wave is spread out i think all i know the answer is A so yeah

305.7

explanation:

density =m/v

density =917/3.00

density = 305.

approximately = 305.7

in four significant figures