where, as discussed in the previous section, the adiabaticgas
for dry air, is the ideal gas
constant for air in meters-squared per second-squared per
degrees-Kelvin-squared, and is absolute temperature in degrees
Kelvin (which equals degrees Celsius + 273.15). For example, at zero
degrees Celsius (32 degrees Fahrenheit), the speed of sound is
calculated to be 1085.1 feet per second. At 20 degrees Celsius, we
get 1124.1 feet per second.