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Author Question: A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr ... (Read 119 times)

bobbysung

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on: Jul 29, 2018
A tsunami, an ocean wave generated by an earthquake, propagates along the open ocean at 700 km/hr and has a wavelength of 750 km. What is the frequency of the waves in such a tsunami?
 
  A) 0.93 Hz
  B) 0.00026 Hz
  C) 1.1 Hz
  D) 6.8 Hz
  E) 0.15 Hz

Question 2

When an object is 12 cm in front of a concave mirror, the image is 3.0 cm in front of the mirror? What is the focal length of the mirror?
 
  A) -0.25 cm
  B) 15 cm
  C) 4.0 cm
  D) 2.4 cm
  E) -1.3 cm


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flannelavenger

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Reply #1 on: Jul 29, 2018
Answer to Question 1

B

Answer to Question 2

D


bobbysung

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Reply #2 on: Jul 29, 2018
Both answers were spot on, thank you once again


flannelavenger

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Reply #3 on: Jul 29, 2018
Great! Please up vote :D


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