posted by sarah .
For long range communication an elephant uses a low frequency rumble that is undetectable to human ears. One elephant can pick up another elephant's call from a distance of 10 km. The frequency of this rumble is about 13 Hz. How fast does the rumble travel?
sound propagation is directly proportional to the medium it travels. factors contribute to propagation are altitude, humidity,& temperature of the gas, like air. speed of sound is determined by air itself not on amplitude, frequency, or wavelenght.Formula: V (velocity)= meters/second, ft/second, or mph + T (temperature)in F or C.