The Intensity of Sound Decreases by a Factor of Ten

question 5

Multiple Choice

The intensity of sound decreases by a factor of ten as it pass through a wall of uniform composition.If the wall is replace with a similar wall having the same thickness,but an absorption coefficient double that if the first wall,the intensity of the same sound will decrease by a factor of ____ as it passes through the new wall.

• A)10
• B)12
• C)20
• D)21
• E)100

---

Definitions:

Par Value

The face value of a bond or stock as stated by the issuing company, which may differ from its market value.

Market Rate

The prevailing price or interest rate available in the marketplace for goods, services, or securities.

Coupon Rate

The coupon rate is the annual interest rate paid by a bond relative to its face value, expressed as a percentage.

Principal Amount

The initial size of a loan or bond or the amount of money invested, excluding any interest or dividends.