ultrasound includes any sounds with wave frequencies greater than ______hz. (enter your answer in the…
ultrasound includes any sounds with wave frequencies greater than ______hz. (enter your answer in the numerical form without commas or spaces)
Answer
Explanation:
Step1: Recall ultrasound definition
Ultrasound is defined as sound with frequencies above the upper - limit of human hearing.
Step2: Know human - hearing upper - limit
The upper - limit of normal human hearing is 20000 Hz. So, ultrasound has frequencies greater than 20000 Hz.
Answer:
20000