Sound travels at different speeds depending on the medium through which it is traveling. In general, sound travels faster in solids and liquids compared to gases. The speed of sound in dry air at sea level and 20 degrees Celsius (68 degrees Fahrenheit) is approximately 343 meters per second or 1,125 feet per second.
To convert the speed of sound from meters per second to miles per hour (mph), we can use the following conversion factors:
1 meter = 3.28084 feet 1 hour = 3600 seconds 1 mile = 5280 feet
First, let's convert meters per second to feet per second: 343 meters/second * 3.28084 feet/meter = 1125.328 feet/second
Now, let's convert feet per second to miles per hour: 1125.328 feet/second * 3600 seconds/hour * (1 mile/5280 feet) = 767.67 miles/hour
Therefore, the speed of sound in dry air at sea level and 20 degrees Celsius is approximately 767.67 miles per hour.