High-pitched notes have a high frequency, while low-pitched notes have a low frequency. The difference in pitch between Middle C and Concert A is a difference of 178 Hz. Humans can typically hear sounds as low as 20 Hz, and as high as 20,000 Hz. This range is known as the acoustic range of sound.
Intimidator is a steel roller coaster built by Bolliger & Mabillard at Carowinds. The roller coaster is located in the Carowinds Plaza section of the park. Intimidator is the thirteenth roller coaster installed at Carowinds and is located near the entrance of the theme park. It is currently one of the tallest, fastest and longest roller coasters in the Southeast with a 232-foot (71 m) lift hill, a top speed of 75 mph (121 km/h) and a track length of 5,316 feet (1,620 m). It was announced on August 26, 2009 and opened March 27, 2010.
Carowinds' Fury 325 is being billed as the world's tallest and fastest giga coaster. The $30-million Fury 325 coming to Carowinds in 2015 will be among the fastest, tallest and longest roller coasters in the world.