The Pitch of a sound depends upon the speed of the vibrations causing it. This is called the frequency. The frequency of a sound is measured in Hertz (Hz) after the German sci â¦ entist Heinrich Rudolf Hertz(1857-1894)  1 Hertz = 1 Vibration Per Second. 3 people found this useful.
Police declared Simpson a fugitive, and hours later, the infamous low-speed chase began. Approximately 6:45 p.m. on June 17, 1994, police saw Simpson on the expressway in a white Ford Bronco driven by his best friend and former teammate, Al Cowlings. Simpson was riding in the back, and he reportedly had a gun. With the cavalcade of police cars in pursuit, TV helicopters swooped in to join the chase.
The Motto of the United States. Salmon Portland Chase (1808-1873) was the United States Secretary of the Treasury under President Abraham Lincoln. He served as the Governor of Ohio, a U.S. Senator and was appointed by President Lincoln as Chief Justice of the Supreme Court.