Two Sounds Differ by 30 DB

question 80

Multiple Choice

Two sounds differ by 30 dB.The intensity of the louder sound I_L,compared with the softer I_S,is I_L/I_S.The value of the ratio is

• A)1000
• B)30
• C)9
• D)100
• E)300

---

Definitions:

Caption

A property in a database that enables the field name to display in a more meaningful or readable manner.

Data Staging

An intermediate storage area used for data processing during the extract, transform, and load process; between the data source and the data warehouse.

Data Mining

The process by which great amounts of data are analyzed and investigated. The objective is to spot significant patterns or trends within the data that would otherwise not be obvious.

Default Value

A predefined setting or value automatically assigned to a software application, computer program, or device, typically operational until changed by the user.