Have you ever listened for an approaching train by kneeling next to a railroad track and...
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 = 2.0 × 1011 N/m2, and the density of steel is ρ = 7860 kg/m3. On a day when the temperature is 20°C, how many times greater is the speed of sound in the rail than in the air?
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Have you ever listened for an approaching train by kneeling next
to a railroad track and...
As you stand near a railroad track, a train passes by at a speed of 30.1...
As you stand near a railroad track, a train passes by at a speed of 30.1 m/s while sounding its horn at a frequency of 218 Hz. What frequency do you hear as the train approaches you and what frequency while it recedes? Take the speed of sound in air to be 343 m/s. approaching: Hz receding:
(25%) Problem 4: You place your ear onto a steel railroad track and hear the sound...
(25%) Problem 4: You place your ear onto a steel railroad track and hear the sound of a distant train through the rails Δ 4.1 seconds before you do through the air. The speed of sound in steel is vs 6100 m/s, and and the air temperature is 12.5° C Find the distance, D, to the train in meters Po cos0 cotan) asin) Su Ar sin acos) de atan)acotan)sinh( coshO tanhO cotanhO 0 END Degrees -Radians BACKSPACE DELCLEAR Submit Hint...
As you stand near a railroad track, a train passes by at a speed of 30.1 m/s while sounding its horn at a frequency of 218 Hz. What frequency do you hear as the train approaches you and what frequency while it recedes? Take the speed of sound in air to be 343 m/s. approaching: Hz receding:
(25%) Problem 4: You place your ear onto a steel railroad track and hear the sound of a distant train through the rails Δ 4.1 seconds before you do through the air. The speed of sound in steel is vs 6100 m/s, and and the air temperature is 12.5° C Find the distance, D, to the train in meters Po cos0 cotan) asin) Su Ar sin acos) de atan)acotan)sinh( coshO tanhO cotanhO 0 END Degrees -Radians BACKSPACE DELCLEAR Submit Hint...
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