A Student is on a skateboard facing a wall. The student and skateboard have a mass of 75.0 kg. The student pushes off the wall with a force of 100.0 N. What is the force of the wall pushing back on the student? What is the acceleration of the student as she moves away from the wall?

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.