Why is the sound produced in air not heard by a person deep inside the water ?

A whistle is rotated in a horizontal circle. Is there any change in the sound of the whistle, heard by a person standing (i) at the centre of the circle (ii) outside the circle ?

Which frequency produces a sound that can be heard by a person?

The sound produced in a big hall repeats itself. Why ?

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

Doctors use stethoscope to hear the sounds produced during each cardiac cycle. The second sound is heard when

Why is the loudness of the sound heard by a plucked wire increased when it is mounted on a sound board ?

The frequency of a tuning fork is 150 Hz and distance travelled by the sound, produced in air is 20 cm in one vibration. Calculate the speed of sound in air.

Why is a loud sound heard at resonance ?

A train approaching a railway platform with a speed of 20 m s^(-1) starts blowing the whistle. Speed of sound in air is 340 m s^(-1) . If the frequency of the emitted sound from the whistle is 640 Hz, the frequency of sound as heard by person standing on the platform

The horn of a car emits sound with a dominant frequency of 2400 Hz. What will be the apparent dominant frequency heard by a person standing on the road in front of the car if the car is approaching at 18.0 km h^-1 ? Speed of sound in air = 340 m s^-1