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Waves.....?
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 handrail of solid steel. The speeds of sound in air, water, and the handrail are 343, 1482, and 5040 m/s, respectively. The sound travels a distance of 115 m in each medium.
(a) Through which medium does the sound arrive first, second, and third?
_(first)
_(second)
_(third)
(b) After the first sound arrives, how much later do the second and third sounds arrive?
_s (second sound)
_s (third sound)
1) b
2) d
3) a
West Pier Animation