Which of the following statements is an accurate description of vibrations? A. Ultrasonic vibrations have a frequency lower than the range for normal hearing. B. Infrasonic vibrations are used in sonar equipment as well as to detect flaws in steel castings. C. The frequency of infrasonic vibrations is much too high to be heard by humans. D. Neither ultrasonic nor infrasonic vibrations can be heard by humans.
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Home » Physics » Which of the following statements is an accurate description of vibrations? A. Ultrasonic vibrations have a frequency lower than the range for normal hearing. B.