A Sound Source Emits 20

question 23

Multiple Choice

A sound source emits 20.0 W of acoustical power spread equally in all directions.The threshold of hearing is 1.0 × 10^-12 W/m².What is the sound intensity level 30.0 m from the source?

• A)92.5 dB
• B)81.5 dB
• C)1.77 × 10^-3 dB
• D)1.77 × 10^-3 W
• E)-27.5 dB

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Definitions:

Budgeted Selling Price

The price at which a company plans to sell its products or services, often used in budgeting and financial forecasting.

Direct Labor-Hours

A quantification of the total hours spent by employees working directly on the production of goods or services.

Total Cash Collected

The sum of all cash received by a company during a specified period, including sales, accounts receivable collections, and other cash receipts.

Collections

The process of recovering the amounts owed to a business by its debtors or the action of receiving payments.