1 Find the acceleration of an object if there is a force of 20 newtons in one direction and 10 newtons in the opposite direction. The mass if 2 kg.

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.

If the force applied to an object remains constant, is more power needed for the object to move faster ? explain

What is the equation for electrical work?