Answer:
All waves have amplitude, wavelength, and frequency.
Explanation:
A sound wave's frequency is experienced as the wave's pitch. The amplitude determines loudness or volume. The tone of a sound wave can be recognized by the regularity of its vibration.
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<span>Which of these is true of the century following the Pax Romana?
</span><span>C) The Roman military kept the empire's borders secure.</span>