a second wave leaves the sentry of an earthquake at the same time. the second wave is longitudinal wave. after 10 seconds, will the two waves travel the same distance?

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

3.2x10^7

he made 11 calls in one day