for this answer it's false i made a 90 on this test :)
Waves with frequencies over 20,000 Hz are considered ultrasonic waves. They are higher in frequency than what humans can hear, and are commonly used in medical imaging, cleaning processes, and communication technologies.
Sounds with frequencies higher than 20000 Hz are considered ultrasonic and are typically outside the range of human hearing. These sounds can be produced by animals like bats and dolphins for echolocation, as well as certain electronic devices like ultrasonic sensors and medical equipment.
The range of frequencies that people can hear is generally from 20 Hz to 20,000 Hz. However, individual hearing abilities can vary slightly, with younger individuals typically being able to hear higher frequencies than older individuals.
Sound waves with frequencies above 20,000 Hz are considered ultrasonic. These frequencies are above the upper limit of human hearing and are commonly used in applications like medical imaging, cleaning, and animal communication.
The audible range of frequencies for humans is, on average, between 20 Hz and 20kHz, although it varies between individuals. As humans age, however, this range normally decreases, especially on the higher end of the range.
Waves with frequencies over 20,000 Hz are considered ultrasonic waves. They are higher in frequency than what humans can hear, and are commonly used in medical imaging, cleaning processes, and communication technologies.
Sound frequency refers to the number of vibrations per second of a sound wave, measured in Hertz (Hz). Higher frequencies correspond to higher pitch sounds, while lower frequencies correspond to lower pitch sounds. Humans can typically hear frequencies ranging from 20Hz to 20,000Hz.
Sounds with frequencies higher than 20000 Hz are considered ultrasonic and are typically outside the range of human hearing. These sounds can be produced by animals like bats and dolphins for echolocation, as well as certain electronic devices like ultrasonic sensors and medical equipment.
typically 20-20000 Hz - but this range will decrease with age
The range of frequencies that people can hear is generally from 20 Hz to 20,000 Hz. However, individual hearing abilities can vary slightly, with younger individuals typically being able to hear higher frequencies than older individuals.
The frequencies (cycles per second) of the audible vibrations are between 20 Hz and 20000 Hz.
Sound waves with frequencies above 20,000 Hz are considered ultrasonic. These frequencies are above the upper limit of human hearing and are commonly used in applications like medical imaging, cleaning, and animal communication.
typically 20-20000 Hz - but this range will decrease with age
The audible range of frequencies for humans is, on average, between 20 Hz and 20kHz, although it varies between individuals. As humans age, however, this range normally decreases, especially on the higher end of the range.
Sounds with frequencies above 20,000 Hz are considered ultrasonic and are generally not audible to the human ear. Some animals, such as bats and dolphins, are capable of hearing and producing sounds in this frequency range. Ultrasonic frequencies are also used in various technologies like medical imaging and pest control.
3.3% of 20,000= 3.3% * 20000= 0.033 * 20000= 660
42% of 20000= 42% * 20000= 0.42 * 20000= 8,400