A boat sounds a fog horn on a day when both the sea water and the air temperature are 25.0° C. The speed of sound in sea water is 1 533 m/s. How much earlier (in s) does a dolphin 1 000 m from the source hear the sound than a person in a boat that is also 1 000 m distant? (Ignore the time it takes the sound to reach the water surface.) A 0.652 B 2.77 2.24 D 2.90 E) 2.12

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Chapter1: Units, Trigonometry. And Vectors
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A boat sounds a fog horn on a day when both the sea water and the air temperature are 25.0° C. The speed of sound in sea water is
1 533 m/s. How much earlier (in s) does a dolphin 1 000 m from the source hear the sound than a person in a boat that is also 1 000
m distant? (Ignore the time it takes the sound to reach the water surface.)
(A) 0.652
(B) 2.77
2.24
D) 2.90
(E) 2.12
Transcribed Image Text:A boat sounds a fog horn on a day when both the sea water and the air temperature are 25.0° C. The speed of sound in sea water is 1 533 m/s. How much earlier (in s) does a dolphin 1 000 m from the source hear the sound than a person in a boat that is also 1 000 m distant? (Ignore the time it takes the sound to reach the water surface.) (A) 0.652 (B) 2.77 2.24 D) 2.90 (E) 2.12
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