Which of the following are not units of frequency: hertz. m/s. waves/s

Waves are used in many practical applications to support work, entertainment, and health. one example is the use of ultrasound imaging to safely track the development of a growing fetus. what is a specific example of a practical application of waves in medicine, entertainment, safety, or other fields? provide a brief explanation of how the properties of waves are useful to that application.

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

What determines the amount of inertia an object has