[" Eafa "],[" sound "]

Shrill sound is a high-piich sound and a soft sound is a low-pitch sound.

A bat emits ultrasonic sound of frequency 1000 kHz in air. If the sound meets a water surface, what isthe wavelength of the reflected sound the reflected sound.

Characteristics of a sound which distinguishes shrill sound from a dull sound

Pitch of the sound means frequency of the sound and loudness of the sound means amplitude.

The "lubb" sound (first heart sound) is caused by

The intensity of a sound is a measure of the energy the sound wave is carrying .

What are the heart sounds? When and how are these sounds produced?