There are two common definitions of Heat. The correct definition is...?

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.

Which accounts for an increase in the temperature of a gas that is kept a constant volume

Which changes would result in a decrease in the gravitational force btween two objects? check all that apply