(Solved) An earthquake generates three kinds of waves: surface waves (L-waves), which are the slowest and ...

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An earthquake generates three kinds of waves: surface waves (L-waves), which are the slowest and ...

An earthquake generates three kinds of waves: surface waves (L-waves), which are the slowest and weakest, shear (S) waves, which are transverse waves and carry most of the energy, and pressure (P) waves, which are longitudinal waves and are the fastest. The speed of P waves is approximately 7 km/s, and that of S waves is about 4 km/s. People do not generally feel the P waves, but animals seem to be sensitive to them. If a person reports that her dog started barking 20 seconds "before the earthquake," then approximately how far was the origin of the earthquake?
A) 100 km
B) 200 km
C) 300 km
D) 400 km
E) 500 km

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Physics

Edition: 4^th

Author: Walker

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Anonymous

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A year ago

An earthquake generates three kinds of waves: surface waves (L waves), which are the slowest and weakest; shear (S) waves, which are transverse waves and carry most of the energy; and pressure (P) waves, which are longitudinal waves and travel the fastest. The speed of P waves is approximately 7.0 km/s, and that of S waves is about 4.0 km/s. Animals seem to feel the P waves. If a dog senses the arrival of P waves and starts barking 34.7 s before an earthquake is felt by humans, approximately how far is the dog from the earthquake

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