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Author Question: A boat sounds a fog horn on a day when both the sea water and the air temperature are 25.0 C. The ... (Read 57 times)

tfester

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on: Jul 28, 2018
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. 2.12
  c. 2.24
  d. 2.77
  e. 2.90

Question 2

Earthquake waves are classified as P waves and S waves. Which of the following statements is true about these waves?
 a. The P wave is transverse as is the S wave. b. The P wave is longitudinal as is the S wave. c. The P wave is transverse and the S wave is longitudinal.
  d. The P wave is longitudinal and the S wave is transverse. e. Both the P and S waves are mixtures of longitudinal and transverse waves.


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Natalie4ever

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Reply #1 on: Jul 28, 2018
Answer to Question 1

C

Answer to Question 2

D


tfester

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Reply 2 on: Jul 28, 2018
Great answer, keep it coming :)

Sarahjh

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Reply 3 on: Yesterday
Excellent

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