Supersonic speed
Supersonic speed is a rate of travel of an object that exceeds the speed of sound (Mach 1). For objects traveling in dry air of a temperature of 20 °C (68 °F) at sea level, this speed is approximately 343.2 m/s, 1,125 ft/s, 768 mph, 667 knots, or 1,235 km/h. Speeds greater than five times the speed of sound (Mach 5) are often referred to as hypersonic. Flights during which only some parts of the air surrounding an object, such as the ends of rotor blades, reach supersonic speeds are called transonic. This occurs typically somewhere between Mach 0.8 and Mach 1.23.
Sounds are traveling vibrations in the form of pressure waves in an elastic medium. In gases, sound travels longitudinally at different speeds, mostly depending on the molecular mass and temperature of the gas, and pressure has little effect. Since air temperature and composition varies significantly with altitude, Mach numbers for aircraft may change despite a constant travel speed. In water at room temperature supersonic speed can be considered as any speed greater than 1,440 m/s (4,724 ft/s). In solids, sound waves can be polarized longitudinally or transversely and have even higher velocities.
Supersonic (Younha album)
Supersonic is a studio album by Korean singer Younha, released on July 03, 2012. While technically her fifth Korean album, it is fourth album as a whole, as referenced by the album title.
Track listing
Supersonic (disambiguation)
Supersonic refers to any speed over the speed of sound.
Supersonic may also refer to:
Music
Albums
Songs
Ding Dong Song
"Ding Dong Song" is a song by Swedish pop singer Günther, featuring The Sunshine Girls, based on a 1984 Dutch hit called "Tralala" by Phil & Company. "Ding Dong Song" was released in 2004 on Günther's debut album, Pleasureman. The song was number one for three weeks on the Swedish music charts.
Background and recording
Günther's version is sung in English with a heavy German accent. The song is a parody of Eurodance genres, especially those from the 1980s and 1990s in Germany.
The song gained widespread popularity on YouTube. Examples of the most popular fan-made videos include US soldiers in Iraq dancing to the song, YouTube users in front of their computers lip-synching, and various edited parodies.
Chart performance
References
Podcasts:
