CBSE Class 9 Answered
why infra sound travels through ground but not through air?
Asked by HANNAH BASIL | 20 Jan, 2012, 12:00: AM
Sound waves, particularly in the atmosphere, whose frequencies of pressure variation and of vibration are below the audible range, that is, lower than about 20 Hz. Earthquake and seismic waves are elastic waves which occur at infrasonic frequencies in the Earth's crust and in the oceans and seas. The physical laws of propagation in the atmosphere are essentially the same as for audible sound. The local speed of infrasound in air at ambient temperatures near 20°C (68°F) is about 340 m/s (1115 ft/s), the same as for audible sound.
Answered by | 21 Jan, 2012, 05:52: PM
Application Videos
Concept Videos
CBSE 9 - Physics
Asked by sm6878261 | 12 Jan, 2023, 07:42: AM
CBSE 9 - Physics
Asked by pooja12366764 | 25 Jan, 2022, 10:46: PM
CBSE 9 - Physics
Asked by ashishyadav | 22 Mar, 2021, 05:20: AM
CBSE 9 - Physics
Asked by Alamglassfebricartion | 16 Mar, 2021, 09:57: AM
CBSE 9 - Physics
Asked by mursaleenmalik1962 | 14 Dec, 2020, 07:18: PM
CBSE 9 - Physics
Asked by dwarakanathan.s | 19 Apr, 2020, 07:02: AM
CBSE 9 - Physics
Asked by upmasoodpassi | 05 Apr, 2020, 11:09: AM
CBSE 9 - Physics
Asked by balkisbegumbca | 29 Feb, 2020, 05:14: PM
CBSE 9 - Physics
Asked by tanaypandey4 | 11 Feb, 2020, 05:28: PM