advertisement

Practice Problem 0416 The air temperature is -10 degrees Celsius. How long will it take a sound wave to travel 2 kilometers. (see next page for the solution) The air temperature is -10 degrees Celsius. With this information, we can determine the speed of sound. v = 332 + 0.6temp v = 332 + 0.6(10) v = 338 m/s The sound wave travels a total distance of 2 km. Since speed is measured in m/s, we will convert the distance into m. Δd = 2 km = 2000 m Since sound waves travel at constant speed, we can use the following equation to solve for time v= Δd Δt 338 = Δt = 2000 Δt 2000 338 Δt = 5.92 seconds