Two Loudspeakers S₁ and S₂, 3

question 69

Multiple Choice

Two loudspeakers S₁ and S₂, 3.0 m apart, emit the same single-frequency tone in phase at the speakers. A listener directly in front of speaker S₁ notices that the intensity is a minimum when she is 4.0 m from that speaker (see figure) . The listener now walks around speaker S₁ in an arc of a circle, staying 4.0 m from that speaker but increasing her distance from the other speaker. How far is she from speaker S₂ when she notices the first maximum in the sound intensity? The speed of sound in air is 340 m/s.

• A) 4.5 m
• B) 5.0 m
• C) 5.5 m
• D) 6.0 m
• E) 6.5 m

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Definitions:

Medical Technology

The use of technology and devices in the practice of medicine to diagnose, treat, and monitor diseases and conditions.

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A group of individuals involved in persistent social interaction, or a large social group sharing the same geographical or social territory, typically subject to the same political authority and dominant cultural expectations.

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Temporary care provided to patients or clients, intended to give relief to their usual caregivers.

Caregivers

Caregivers are individuals who provide direct care and support to people with health-related needs or disabilities, including family members or professional health care providers.