Question

________ sounds have frequencies too high for the human ear to hear​

Answer 1

Explanation:

Ultrasonic sounds have frequencies higher than 20,000Hz which can't be heard by humans.

Answer 2

Answer:

Ultrasound.

Explanation:

Humans can generally sense sounds at frequencies between 20 and 20,000 cycles per second, or hertz (Hz)

High-intensity ultrasonic sound (generally anything above 20KHz) can cause physical damage.