Answer:
the string and metre rule
Explanation:
Compression and rarefaction are two phenomenon occurs in longitudunal wave!
when there is denser particle gathering in that wave , there we called it compression and the rarer part of particles is rarefaction !
There is no theoretical OR observational evidence for that statement.
I,think potential energy is mgh so 65*100*9,81
8.8 miles. You divide 22.4 & 2.55.
