physics

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 39.5 s before an earthquake is felt by humans, approximately how far is the dog from the earthquake’s epicenter? pleaaseeee !!!

  1. 👍
  2. 👎
  3. 👁
  1. Shear (S) waves arrive next, after P.
    For each kilometer distance from epicenter, there is a delay of 1/4 - 1/7 = 0.107 seconds between those two waves.

    A 39.5 second delay means the distance is 369 miles.

    1. 👍
    2. 👎
  2. 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 39.5 s before an earthquake is felt by humans, approximately how far is the dog from the earthquake’s epicenter? pleaaseeee !!! ('drwls' 369 miles is wrong answer :( ! can you calculate with meter pleasee )

    1. 👍
    2. 👎
  3. distancein km= 1km/.107*39.5s=369km

    1. 👍
    2. 👎
    👤
    bobpursley
  4. 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 23.3 s before an earthquake is felt by humans, approximately how far is the dog from the earthquake’s epicenter?

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. SCIENCE HELP SOMEONE IN FIVE MINUTES

    An earthquake has a high magnitude but a low intensity. Which statement best explains this?(1 point) 1 Magnitude measures the duration of the earthquake, while intensity measures the amount of damage. 2 Magnitude measures the

  2. math

    Earthquakes produce several types of shock waves. The most well-known are the P-waves (P for primary or pressure) and the S-waves (S for secondary or shear). In the earth's crust, the P-waves travel at around 6.5 km/s while the

  3. SCIENCE PLEASE HELP

    •What are earthquakes? •Where do they occur most often? Why? •How likely is it that your area will experience an earthquake? •What are the types of seismic waves? Describe/explain each of them. •What instrument do

  4. SCIENCE HELP SOMEONE IN FIVE MINUTES

    An earthquake has a high magnitude but a low intensity. Which statement best explains this?(1 point) 1 Magnitude measures the duration of the earthquake, while intensity measures the amount of damage. 2 Magnitude measures the

  1. scince

    1. A child holds a red ball. Why does the ball look red?(1 point) a. Only red light waves are absorbed by the ball. b. All visible light waves except red are absorbed by the ball. c. Only red light waves reach the surface of the

  2. Science

    What does it mean that a material transmits waves?(1 point) Waves will bounce off the surface of the material. Waves will pass through the material. Waves will bend and change their direction slightly when they hit the material.

  3. Science

    1. Which of the following statements about mechanical waves is true? a. mechanical waves require a medium to travel through b. mechanical waves do not have amplitude and wavelength c. mechanical waves do not have frequency d.

  4. Science

    Which of the answers is true about seismic waves? A. Seismic waves travel through the Earth while carrying energy. B. The seismic waves speed and path are depended on the material of which the waves go through.******* C. Seismic

  1. Physics

    The velocity of the transverse waves produced by an earthquake is 7.2 km/s, while that of the longitudinal waves is 4.2 km/s. A seismograph records the arrival of the transverse waves 68 s before that of the longitudinal waves.

  2. Science

    What is the main difference between mechanical and electromagnetic waves? A. Mechanical weaves involved transfers energy; electromagnetic waves do not B. Mechanical waves require a medium to travel in; electromagnetic waves do

  3. Science Please check my answers mrs.sue

    Which deductive reasoning provides evidence contradicting the idea that the Earth's core is solid? (1 point) After a major earthquake in 1960, scientists around the world detected S and P waves. Earthquakes consist of both P and S

  4. science

    A grasshopper floating in water generates waves at a rate of three per second with a wavelength of two centimeters. (a) What is the period of these waves in seconds? (b) What is the wave velocity in m/s?

You can view more similar questions or ask a new question.