In Virginia: Anthem Health Plans of Virginia, Inc. trades as Anthem Blue Cross and Blue Shield in Virginia, and its service area is all of Virginia except for the City of Fairfax, the Town of Vienna, and the area east of State Route 123.
For example, at sea level in a standard atmosphere, at a temperaturâ¦e of 59-degrees Fahrenheit (15 Celsius), sound travels 761 miles per hour (1,225 km/p/h). At a temperature of 32-degrees Fahrenheit (0 Celsius) the speed of sound drops to 742 mph (1,194 km/p/h).
Question: In air at 20 degrees Celsius, sound travels at a c... In air at 20 degrees Celsius, sound travels at a constant speed of 344 m/s. The light speed is equal to 299792458 m/s. Part A The light year is defined as the distance light travels in 1 year.