Explore BrainMass
Share

Explore BrainMass

    Speed of Sound of approaching train in the rail and in the air

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Have you ever listened for an approaching train by kneeling next to a railroad track and putting your ear to the rail? Young's modulus for steel is Y = 2.00 x 1011 N/m2, and the density of steel is = 7860 kg/m3. On a day when the temperature is 24.1 oC, how many times greater is the speed of sound in the rail than in the air?

    © BrainMass Inc. brainmass.com October 10, 2019, 12:21 am ad1c9bdddf
    https://brainmass.com/physics/temperature/speed-sound-approaching-train-rail-air-288721

    Solution Preview

    Have you ever listened for an approaching train by kneeling next to a railroad track and putting your ear to the rail? Young's modulus for steel is Y = 2.00 x 1011 N/m2, and the density of steel is = 7860 kg/m3. On a day when the temperature is 24.1 oC, ...

    Solution Summary

    The speed of sound of an approaching train in the rail and in the air are determined.

    $2.19