An explosion occurs at the end of a pier. The sound reaches the other end of the pier by traveling through three media: air, fresh water, and a slender metal handrail. The speeds of sound in air, water and the handrail are 343, 1482, and 5040 m/s, respectively. the sound travels a distance of 125 m in each medium.
(a) Through which medium does the sound arrive first, second, and third?
(b) After the first sound arrives, how much later do the secnd and third sounds arrive?
2007-07-04 04:23:32 · 6 answers · asked by lub1210 1 in Science & Mathematics ➔ Physics
a) If the sound is travelling simultaneously through the three media, it is clear that the medium with the highest velocity will transmit the sound first. Intermediate velocity will be second and air with the least velocity third.
T1 = 125 / 5040 T2 = 125 / 1482 and T3 = 125 / 343 seconds respectively.
b) Subtract T1 from T2 and T2 from T3 for answers.
2007-07-04 04:37:25 · answer #1 · answered by Swamy 7 · 0⤊ 0⤋
a) 1-handrail, 2-water, 3-air
b) 125m / 5040m/s = 0.0248 s handrail
125m / 1482 m/s = 0.0843 s water
125m / 343 m/s = 0.3644 s air
so, 0.0248 s arrives, 0.0843 - 0248 = 0.0594 s later for water, and 0.3644 - 0.0248 = 0.3396 s later for air
2007-07-04 05:00:37 · answer #2 · answered by Anonymous · 1⤊ 0⤋
This was the first time I answered a physics questions so easily that I second guessed myself.
2016-08-31 17:35:48 · answer #3 · answered by Jacob Galvez 1 · 0⤊ 0⤋
That's an interesting question!
2016-08-24 07:38:18 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Doppler shift for a receding item: f' = f c / (c + v) f' is the frequency you pay attention f is the frequency emitted c is the pace of sound v is the speed of the automobile so v = c (f / f' - one million) They deliver you c and f' / f. (Make certain you turn that). Plugnchug.
2016-09-05 14:34:47 · answer #5 · answered by ? 4 · 0⤊ 0⤋
answer A and you will find your answer
2007-07-04 04:31:47 · answer #6 · answered by DENISE 6 · 0⤊ 0⤋