What is the speed of sound at sea level?

The speed of sound at sea level under standard atmospheric conditions is approximately 344 meters per second. This value can vary slightly depending on factors such as temperature, humidity, and atmospheric pressure, but 344 m/s is generally accepted as the baseline measurement at sea level at a temperature of 20 degrees Celsius (68 degrees Fahrenheit).

Understanding the speed of sound is crucial in various fields, including aerodynamics and aviation, as it influences aircraft performance, sonic booms, and navigation among other factors. Knowing this standard speed allows professionals in aeromedical fields to make more accurate predictions and calculations regarding flight operations and the behavior of sound waves in different environments. The other options listed do not align with the established value for the speed of sound at sea level under standard conditions, making them incorrect in this context.