Two Loudspeakers Are Placed Side by Side and Driven by the Same

question 68

Multiple Choice

Two loudspeakers are placed side by side and driven by the same source at 490 Hz.A listener is positioned in front of the two speakers and on the line separating them,thus creating a constructive interference at the listener's ear.If one of the speakers is gradually pushed toward the listener,how far must it be moved to repeat the condition of constructive interference at the listener's ear? (The speed of sound = 340 m/s. )

• A) 1.44 m
• B) 0.69 m
• C) 0.35 m
• D) 0.17 m
• E) ​2.88 m

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Definitions:

AASB102

Refers to a specific standard issued by the Australian Accounting Standards Board concerning inventories, detailing the accounting treatment for inventory costs.

Abnormal Wastage Costs

Expenses related to the unexpected loss or wasteful use of resources beyond what is considered standard or normal.

Transportation Costs

Expenses associated with the movement of goods or materials from one location to another, including shipping fees, fuel costs, and logistical expenses.

Over-Allocated Overheads

A situation where the allocated overhead costs exceed the actual overhead costs incurred.