D. 100%, extremely sure. Because Newton's 3rd law states every force has an equal and opposite reaction.
I will have to say that this statement is true
Answer:
1.Velocity and pitch
2.The unit of vibration is hertz. The number of oscillations of an oscillating body per second is known as frequency. Complete step by step answer: The time taken by a vibrating body to complete one vibration is time period.
3.Frequencies above 20,000 Hz are known as ultrasound.
