revolve; rotate; go around. Context examples: The Earth revolves around the Sun / The lamb roast rotates on a spit over the fire. Hypernyms (to revolve is one way to...): turn (move around an axis or a center) Troponyms (each of the following is one way to revolve): drive in; screw (cause to penetrate, as with a circular motion) screw (turn like a screw)
In air at normal atmosphere at 0 oC the speed of sound is 331.2 m/s. The wavelength of a 500 Hz tone can be calculated as. Î» = (331.2 m/s) / (500 Hz). = 0.662 m.
Sound waves with a high frequency have high pitches. Sound waves with low frequencies have low pitches. The human ear can hear sound energy as low as 20 Hz and as high as 20,000 Hz. The more energy sound has, the larger the wave is (higher amplitude) and the louder it is.