Question

differentiate between infra sound and ultrasound in table form​

Answer 1

Answer:

The normal human range of hearing is between 20 and 20,000 Hz (A Hertz (Hz) is a unit of measure for frequency and is the same as cycles per second). ... Infrasound is sound that is below the lower limit of human hearing, below 20 Hz, and ultrasound is above the upper limit of human hearing, above 20,000 Hz.13-Aug-2018

Answer 2

Answer:

$3y \frac{ | \div - \sqrt{ \\ \sqrt[ \ti \cot( \binom{ \alpha \pi \infty e \beta \beta \pi}{?} ) mes { \times { { \leqslant \csc(?) }^{?} }^{2} }^{2} ]{?} } | }{?} log( \alpha \infty e \beta \sec(?) )$