![]() Because S-waves do not pass through the liquid core, two shadow regions are produced ( (Figure)). For missing data on speed of sound in soft tissues, an arbitrary value of 1500 m/s is set as this has been done in various studies. ![]() The time between the P- and S-waves is routinely used to determine the distance to their source, the epicenter of the earthquake. The P-wave gets progressively farther ahead of the S-wave as they travel through Earth’s crust. P-waves have speeds of 4 to 7 km/s, and S-waves range in speed from 2 to 5 km/s, both being faster in more rigid material. Both types of earthquake waves travel slower in less rigid material, such as sediments. For that reason, the speed of longitudinal or pressure waves (P-waves) in earthquakes in granite is significantly higher than the speed of transverse or shear waves (S-waves). The bulk modulus of granite is greater than its shear modulus. Earthquakes produce both longitudinal and transverse waves, and these travel at different speeds. An approximate sound speed in air (in meters per second) can be calculated. Seismic waves, which are essentially sound waves in Earth’s crust produced by earthquakes, are an interesting example of how the speed of sound depends on the rigidity of the medium. The characteristics of the medium are also important factors, especially temperature. The second shell is farther away, so the light arrives at your eyes noticeably sooner than the sound wave arrives at your ears.Īlthough sound waves in a fluid are longitudinal, sound waves in a solid travel both as longitudinal waves and transverse waves. The first shell is probably very close by, so the speed difference is not noticeable. ![]() (I will look into this further and post any additional information). Sound and light both travel at definite speeds, and the speed of sound is slower than the speed of light. The exact answer depends on the pressure and temperature of the iron as well as its exact composition, but I think a pretty good estimate of the speed of sound in iron would be around 5 kilometers per second. V=\sqrt Differentiating with respect to the density, the equation becomes ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |