Indeed a hotline would suggest a widely used point of communication, not a secret phone number available in a limited number of cities for an undefined purpose. The number (800-353-8237 or 800-353-UBER) was first reported in Quartz, which found it buried several links deep in the app. And when Inc. followed up, an Uber representative said there was no emergency contact, only to walk that statement back the following day.
The pitch or note of a sound that we experience is determined by its wavelength or its frequency. The shorter the wavelength, the higher the frequency becomes, and the higher the pitch that we hear.The amplitude of a sound wave is the same thing as loudness.The loudness or amplitude corresponds to how much the wave is compressed.he pitch or note of a sound that we experience is determined by its wavelength or its frequency. The shorter the wavelength, the higher the frequency becomes, and the higher the pitch that we hear.
Definition of amplitude. 1  1 : the extent or range of a quality, property, process, or phenomenon: such asa : the extent of a vibratory movement (as of a pendulum) measured from the mean position to an extremeb : the maximum departure of the value of an alternating current or wave from the average value. 2  2 : extent of dignity, excellence, or splendor.