Ocean waves hitting a beach are always found to be nearly normal to the shore.

Sound waves in the air are always longitudinal because

The metal always found in the free state is

The metal always found in the free state is

Magnetic field lines are always nearly normal to the surface of a ferromagnet at every point. (This fact is analogous to the static electric field lines being normal to the surface of a conductor at every point.) Why?

The number of sex chromosomes is found to be normal in