1. A. teacher B. lesson C. action D. police

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.

An object moves from position +34m to the position -15m in 15 seconds. what is the total displacement? what is the total velocity?

The softest and hardest minerals are: softest hardest