Two In-Phase Loudspeakers Are Some Distance Apart

question 59

Multiple Choice

Two in-phase loudspeakers are some distance apart. They emit sound with a frequency of 536 Hz. A microphone is moved between the speakers along the line joining the two speakers with a
Constant speed of 1.60 m/s. What beat frequency is observed? The speed of sound in air is 343 m/s.

• A) 5.00 Hz
• B) 9.00 Hz
• C) 7.00 Hz
• D) 8.00 Hz
• E) 6.00 Hz

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Definitions:

Factory Insurance

An insurance policy designed to protect manufacturing facilities against losses from events like fire, theft, or natural disaster.

Depreciation

Allocating the expense of a tangible asset across its life of utility in a systematic manner.

Manufacturing Equipment

Tools, machinery, and other durable assets used in the process of producing goods in a manufacturing setting.

Cost of Goods Manufactured

The total cost incurred to manufacture products within a specific period, including materials, labor, and overhead, ready for sale.