For a Diffraction Horn Loudspeaker, the Sound Emerges Through a Rectangular

question 41

Multiple Choice

For a diffraction horn loudspeaker, the sound emerges through a rectangular opening. The width of a diffraction horn is 0.14 m. If the speed of sound in air is 343 m/s, at what frequency is the diffraction angle $\theta$ equal to 35°?

• A)3300 Hz
• B)4300 Hz
• C)6300 Hz
• D)7700 Hz
• E)9200 Hz

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Definitions:

Customer Margin

The profit derived from serving a particular customer, calculated as sales revenue minus the costs of servicing that customer.

Serving Customers

The process or actions taken to provide goods or services to customers in a way that meets or exceeds their expectations.

Activity-Based Costing

A costing methodology that assigns overhead and indirect costs to specific activities and then to products or services based on their consumption of those activities.

Machine-Hours

A measure of the amount of time machines are run in the production process, often used as a basis for allocating manufacturing overhead costs.