A Sound Wave Radiates from a Source in All Directions

question 3

Multiple Choice

A sound wave radiates from a source in all directions.If the power of the sound source is 200 watts,then the intensity level of the sound wave 1000 m from the source is (in dB)

• A) 62.8.
• B) 66.0.
• C) 68.5.
• D) 70.5.
• E) 72.0.

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Definitions:

Variable Cost

Expenses that change in proportion with production output or sales, such as materials and labor.

Fixed Costs

Costs that remain constant regardless of the amount of goods produced or sold, like lease payments, wages, and coverage fees.

Selling Price

The amount for which a good or service is sold, determining the revenue generated from sales activities.

Variable Cost

Costs that change in proportion to the level of activity or volume of production in a business.