Answer:
Infrasound
but the longer the wavelength of a soundwave, the more it diffracts
Explanation:
Mph= miles per hour
kph= kilometers per hour
Surface tension is the direct measure of the cohesive forces between liquid molecules that allows them to form "film", making it more difficult to move an object through the liquid surface. Compared to other known liqiuds, the surface tension of water is much greater.
A force field works the same as a shield. I protects what ever is inside, or behind the field.
