A Glass Window Is Installed in the Window Space and the Intensity

question 41

Multiple Choice

A glass window is installed in the window space and the intensity level of the sound entering through the window is reduced from 72 dB to 47 dB.The factor,by which the acoustic power entering the chamber is reduced by the glass window,is closest to:

• A)3.2 × 10^-3
• B)2.2 × 10^-2
• C)5.6 × 10^-2
• D)1.0 × 10^-1
• E)1.5 × 10^-1

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Definitions:

Myocardium

The muscular tissue of the heart that is responsible for its contraction and the pumping of blood.

Myocardium

The thick, muscular tissue that makes up the middle layer of the heart wall, responsible for pumping blood through the cardiovascular system.

Heart Layer

The anatomical layers of the heart, typically referring to the endocardium, myocardium, and epicardium that make up the heart's structure.

Muscle

Tissue in the body composed of fibers capable of contracting to produce movement or maintain the position of parts of the body.