What is fire made of?

I’m sorry tay I’m cheating on you with fire:(

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.

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

Which of the following is not a means to accelerating? question 4 options: a)increase speed b)remain still c)decrease speed d)change direction