Fre points

What is the difference between electrically neutral objects and electrically charged objects

Free runners jump long distances and land on the ground or a wall. how do they apply newton’s second law to lessen the force of impact?

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.